122154202256 has 40 divisors (see below), whose sum is σ = 248042546880. Its totient is φ = 58166418816.

The previous prime is 122154202249. The next prime is 122154202273. The reversal of 122154202256 is 652202451221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640490 + ... + 809033.

It is an arithmetic number, because the mean of its divisors is an integer number (6201063672).

Almost surely, 2^122154202256 is an apocalyptic number.

122154202256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

122154202256 is an abundant number, since it is smaller than the sum of its proper divisors (125888344624).

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

122154202256 is a wasteful number, since it uses less digits than its factorization.

122154202256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449783 (or 1449777 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 122154202256 its reverse (652202451221), we get a palindrome (774356653477).

The spelling of 122154202256 in words is "one hundred twenty-two billion, one hundred fifty-four million, two hundred two thousand, two hundred fifty-six".