121020021102 has 32 divisors (see below), whose sum is σ = 249967296000. Its totient is φ = 39038086208.

The previous prime is 121020021077. The next prime is 121020021179. The reversal of 121020021102 is 201120020121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2385852 + ... + 2436047.

It is an arithmetic number, because the mean of its divisors is an integer number (7811478000).

Almost surely, 2^121020021102 is an apocalyptic number.

121020021102 is an abundant number, since it is smaller than the sum of its proper divisors (128947274898).

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

121020021102 is a wasteful number, since it uses less digits than its factorization.

121020021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822040.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121020021102 its reverse (201120020121), we get a palindrome (322140041223).

The spelling of 121020021102 in words is "one hundred twenty-one billion, twenty million, twenty-one thousand, one hundred two".