121250255502 has 16 divisors (see below), whose sum is σ = 246119922432. Its totient is φ = 39813516600.

The previous prime is 121250255501. The next prime is 121250255509. The reversal of 121250255502 is 205552052121.

It is a self number, because there is not a number n which added to its sum of digits gives 121250255502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121250255501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150808374 + ... + 150809177.

It is an arithmetic number, because the mean of its divisors is an integer number (15382495152).

Almost surely, 2^121250255502 is an apocalyptic number.

121250255502 is an abundant number, since it is smaller than the sum of its proper divisors (124869666930).

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

121250255502 is a wasteful number, since it uses less digits than its factorization.

121250255502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301617623.

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 121250255502 in words is "one hundred twenty-one billion, two hundred fifty million, two hundred fifty-five thousand, five hundred two".