121002021102 has 16 divisors (see below), whose sum is σ = 242027297280. Its totient is φ = 40330131192.

The previous prime is 121002021079. The next prime is 121002021131. The reversal of 121002021102 is 201120200121.

121002021102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121002021102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900952 + ... + 1026507.

It is an arithmetic number, because the mean of its divisors is an integer number (15126706080).

Almost surely, 2^121002021102 is an apocalyptic number.

121002021102 is an abundant number, since it is smaller than the sum of its proper divisors (121025276178).

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

121002021102 is a wasteful number, since it uses less digits than its factorization.

121002021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937927.

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

Adding to 121002021102 its reverse (201120200121), we get a palindrome (322122221223).

The spelling of 121002021102 in words is "one hundred twenty-one billion, two million, twenty-one thousand, one hundred two".