121256760552 has 64 divisors (see below), whose sum is σ = 310419975360. Its totient is φ = 39449894400.

The previous prime is 121256760551. The next prime is 121256760607. The reversal of 121256760552 is 255067652121.

It is not an unprimeable number, because it can be changed into a prime (121256760551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1382652 + ... + 1467732.

It is an arithmetic number, because the mean of its divisors is an integer number (4850312115).

Almost surely, 2^121256760552 is an apocalyptic number.

121256760552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121256760552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155209987680).

121256760552 is an abundant number, since it is smaller than the sum of its proper divisors (189163214808).

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

121256760552 is a wasteful number, since it uses less digits than its factorization.

121256760552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86514 (or 86510 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 121256760552 in words is "one hundred twenty-one billion, two hundred fifty-six million, seven hundred sixty thousand, five hundred fifty-two".