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1220012202 = 23203335367
BaseRepresentation
bin100100010110111…
…1110100010101010
310011000200001010010
41020231332202222
54444310342302
6321021032350
742142634613
oct11055764252
93130601103
101220012202
11576735252
122a06b56b6
131659b0316
14b805cc0a
157219016c
hex48b7e8aa

1220012202 has 8 divisors (see below), whose sum is σ = 2440024416. Its totient is φ = 406670732.

The previous prime is 1220012197. The next prime is 1220012203. The reversal of 1220012202 is 2022100221.

It is a sphenic number, since it is the product of 3 distinct primes.

1220012202 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1220012203) 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, 101667678 + ... + 101667689.

It is an arithmetic number, because the mean of its divisors is an integer number (305003052).

Almost surely, 21220012202 is an apocalyptic number.

1220012202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1220012202 is a wasteful number, since it uses less digits than its factorization.

1220012202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203335372.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1220012202 is about 34928.6730638311. The cubic root of 1220012202 is about 1068.5332924867.

Adding to 1220012202 its reverse (2022100221), we get a palindrome (3242112423).

The spelling of 1220012202 in words is "one billion, two hundred twenty million, twelve thousand, two hundred two".

Divisors: 1 2 3 6 203335367 406670734 610006101 1220012202