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1222211201111 = 1498202759739
BaseRepresentation
bin10001110010010001011…
…101101110100001010111
311022211202000000000220122
4101302101131232201113
5130011042031413421
62333250455422155
7154205350540265
oct21622135564127
94284660000818
101222211201111
114313783a624a
12178a5808495b
138b33c116464
1443226365435
1521bd4b372ab
hex11c9176e857

1222211201111 has 4 divisors (see below), whose sum is σ = 1230413961000. Its totient is φ = 1214008441224.

The previous prime is 1222211201077. The next prime is 1222211201161. The reversal of 1222211201111 is 1111021122221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222211201111 - 210 = 1222211200087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222211201111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222211201161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4101379721 + ... + 4101380018.

It is an arithmetic number, because the mean of its divisors is an integer number (307603490250).

Almost surely, 21222211201111 is an apocalyptic number.

1222211201111 is a deficient number, since it is larger than the sum of its proper divisors (8202759889).

1222211201111 is an equidigital number, since it uses as much as digits as its factorization.

1222211201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8202759888.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1222211201111 its reverse (1111021122221), we get a palindrome (2333232323332).

The spelling of 1222211201111 in words is "one trillion, two hundred twenty-two billion, two hundred eleven million, two hundred one thousand, one hundred eleven".

Divisors: 1 149 8202759739 1222211201111