121002642102 has 8 divisors (see below), whose sum is σ = 242005284216. Its totient is φ = 40334214032.

The previous prime is 121002642091. The next prime is 121002642139. The reversal of 121002642102 is 201246200121.

It is a sphenic number, since it is the product of 3 distinct primes.

121002642102 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10083553503 + ... + 10083553514.

It is an arithmetic number, because the mean of its divisors is an integer number (30250660527).

Almost surely, 2^121002642102 is an apocalyptic number.

121002642102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121002642102 is a wasteful number, since it uses less digits than its factorization.

121002642102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20167107022.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 121002642102 its reverse (201246200121), we get a palindrome (322248842223).

The spelling of 121002642102 in words is "one hundred twenty-one billion, two million, six hundred forty-two thousand, one hundred two".