121540225002 has 64 divisors (see below), whose sum is σ = 286233053184. Its totient is φ = 33678469440.

The previous prime is 121540224973. The next prime is 121540225021. The reversal of 121540225002 is 200522045121.

121540225002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357553 + ... + 609035.

It is an arithmetic number, because the mean of its divisors is an integer number (4472391456).

Almost surely, 2^121540225002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121540225002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143116526592).

121540225002 is an abundant number, since it is smaller than the sum of its proper divisors (164692828182).

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

121540225002 is a wasteful number, since it uses less digits than its factorization.

121540225002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251843.

The product of its (nonzero) digits is 1600, while the sum is 24.

The spelling of 121540225002 in words is "one hundred twenty-one billion, five hundred forty million, two hundred twenty-five thousand, two".