122121255552 has 64 divisors (see below), whose sum is σ = 327728856000. Its totient is φ = 40287412224.

The previous prime is 122121255547. The next prime is 122121255577. The reversal of 122121255552 is 255552121221.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1602052 + ... + 1676547.

It is an arithmetic number, because the mean of its divisors is an integer number (5120763375).

Almost surely, 2^122121255552 is an apocalyptic number.

122121255552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122121255552 is an abundant number, since it is smaller than the sum of its proper divisors (205607600448).

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

122121255552 is an equidigital number, since it uses as much as digits as its factorization.

122121255552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278713 (or 3278701 counting only the distinct ones).

The product of its digits is 20000, while the sum is 33.

Adding to 122121255552 its reverse (255552121221), we get a palindrome (377673376773).

The spelling of 122121255552 in words is "one hundred twenty-two billion, one hundred twenty-one million, two hundred fifty-five thousand, five hundred fifty-two".