2221156612356 has 48 divisors (see below), whose sum is σ = 5695122242880. Its totient is φ = 668164779520.

The previous prime is 2221156612349. The next prime is 2221156612471. The reversal of 2221156612356 is 6532166511222.

It is a super-2 number, since 2×2221156612356² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61394121 + ... + 61430288.

It is an arithmetic number, because the mean of its divisors is an integer number (118648380060).

Almost surely, 2^{2221156612356} is an apocalyptic number.

It is an amenable number.

2221156612356 is an abundant number, since it is smaller than the sum of its proper divisors (3473965630524).

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

2221156612356 is a wasteful number, since it uses less digits than its factorization.

2221156612356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122824564 (or 122824562 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The spelling of 2221156612356 in words is "two trillion, two hundred twenty-one billion, one hundred fifty-six million, six hundred twelve thousand, three hundred fifty-six".