121016406522 has 32 divisors (see below), whose sum is σ = 264048444864. Its totient is φ = 36669881600.

The previous prime is 121016406517. The next prime is 121016406523. The reversal of 121016406522 is 225604610121.

It is a self number, because there is not a number n which added to its sum of digits gives 121016406522.

It is not an unprimeable number, because it can be changed into a prime (121016406523) 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, 2227522 + ... + 2281202.

It is an arithmetic number, because the mean of its divisors is an integer number (8251513902).

Almost surely, 2^121016406522 is an apocalyptic number.

121016406522 is an abundant number, since it is smaller than the sum of its proper divisors (143032038342).

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

121016406522 is a wasteful number, since it uses less digits than its factorization.

121016406522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87854.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 121016406522 in words is "one hundred twenty-one billion, sixteen million, four hundred six thousand, five hundred twenty-two".