102021120102 has 64 divisors (see below), whose sum is σ = 232744181760. Its totient is φ = 29510896800.

The previous prime is 102021120083. The next prime is 102021120121. The reversal of 102021120102 is 201021120201.

It is an interprime number because it is at equal distance from previous prime (102021120083) and next prime (102021120121).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 676899 + ... + 813777.

It is an arithmetic number, because the mean of its divisors is an integer number (3636627840).

Almost surely, 2^102021120102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102021120102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116372090880).

102021120102 is an abundant number, since it is smaller than the sum of its proper divisors (130723061658).

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

102021120102 is a wasteful number, since it uses less digits than its factorization.

102021120102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137409.

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

Adding to 102021120102 its reverse (201021120201), we get a palindrome (303042240303).

Subtracting 102021120102 from its reverse (201021120201), we obtain a palindrome (99000000099).

The spelling of 102021120102 in words is "one hundred two billion, twenty-one million, one hundred twenty thousand, one hundred two".