Search a number
-
+
1222122210020 = 2251917917967101
BaseRepresentation
bin10001110010001100001…
…010010000001011100100
311022211111210112211002022
4101302030022100023210
5130010401241210040
62333234000202312
7154203220246115
oct21621412201344
94284453484068
101222122210020
11431332143998
12178a32309398
138b3268587ca
14432185dc20c
1521bcbe096b5
hex11c8c2902e4

1222122210020 has 48 divisors (see below), whose sum is σ = 2716625822400. Its totient is φ = 460532707200.

The previous prime is 1222122210013. The next prime is 1222122210059. The reversal of 1222122210020 is 200122212221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8915531 + ... + 9051570.

It is an arithmetic number, because the mean of its divisors is an integer number (56596371300).

Almost surely, 21222122210020 is an apocalyptic number.

1222122210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222122210020 is an abundant number, since it is smaller than the sum of its proper divisors (1494503612380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222122210020 is a wasteful number, since it uses less digits than its factorization.

1222122210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17967308 (or 17967306 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1222122210020 its reverse (200122212221), we get a palindrome (1422244422241).

The spelling of 1222122210020 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred ten thousand, twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 179 190 358 380 716 895 1790 3401 3580 6802 13604 17005 34010 68020 17967101 35934202 71868404 89835505 179671010 341374919 359342020 682749838 1365499676 1706874595 3216111079 3413749190 6432222158 6827498380 12864444316 16080555395 32161110790 61106110501 64322221580 122212221002 244424442004 305530552505 611061105010 1222122210020