121020102 has 48 divisors (see below), whose sum is σ = 312847920. Its totient is φ = 34576416.

The previous prime is 121020091. The next prime is 121020113. The reversal of 121020102 is 201020121.

It is an interprime number because it is at equal distance from previous prime (121020091) and next prime (121020113).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20223 + ... + 25514.

It is an arithmetic number, because the mean of its divisors is an integer number (6517665).

Almost surely, 2^121020102 is an apocalyptic number.

121020102 is an abundant number, since it is smaller than the sum of its proper divisors (191827818).

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

121020102 is a wasteful number, since it uses less digits than its factorization.

121020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45762 (or 45749 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 121020102 is about 11000.9136893260. The cubic root of 121020102 is about 494.6361329597.

Adding to 121020102 its reverse (201020121), we get a palindrome (322040223).

It can be divided in two parts, 1210 and 20102, that added together give a palindrome (21312).

The spelling of 121020102 in words is "one hundred twenty-one million, twenty thousand, one hundred two".