121201002102 has 16 divisors (see below), whose sum is σ = 242415563760. Its totient is φ = 40398074112.

The previous prime is 121201002079. The next prime is 121201002103. The reversal of 121201002102 is 201200102121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201002103) 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, 446883 + ... + 664910.

It is an arithmetic number, because the mean of its divisors is an integer number (15150972735).

Almost surely, 2^121201002102 is an apocalyptic number.

121201002102 is an abundant number, since it is smaller than the sum of its proper divisors (121214561658).

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

121201002102 is a wasteful number, since it uses less digits than its factorization.

121201002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129967.

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

Adding to 121201002102 its reverse (201200102121), we get a palindrome (322401104223).

The spelling of 121201002102 in words is "one hundred twenty-one billion, two hundred one million, two thousand, one hundred two".