2122561064156 has 36 divisors (see below), whose sum is σ = 4024217218392. Its totient is φ = 979149921984.

The previous prime is 2122561064147. The next prime is 2122561064171. The reversal of 2122561064156 is 6514601652212.

It is a super-2 number, since 2×2122561064156² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 553106 + ... + 2133318.

It is an arithmetic number, because the mean of its divisors is an integer number (111783811622).

Almost surely, 2^{2122561064156} is an apocalyptic number.

2122561064156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2122561064156 is a deficient number, since it is larger than the sum of its proper divisors (1901656154236).

2122561064156 is a wasteful number, since it uses less digits than its factorization.

2122561064156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582230 (or 1582215 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 2122561064156 in words is "two trillion, one hundred twenty-two billion, five hundred sixty-one million, sixty-four thousand, one hundred fifty-six".