20102101021102 has 4 divisors (see below), whose sum is σ = 30153151531656. Its totient is φ = 10051050510550.

The previous prime is 20102101021087. The next prime is 20102101021133. The reversal of 20102101021102 is 20112010120102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025525255274 + ... + 5025525255277.

It is an arithmetic number, because the mean of its divisors is an integer number (7538287882914).

Almost surely, 2^{20102101021102} is an apocalyptic number.

20102101021102 is a deficient number, since it is larger than the sum of its proper divisors (10051050510554).

20102101021102 is a wasteful number, since it uses less digits than its factorization.

20102101021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10051050510553.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20102101021102 its reverse (20112010120102), we get a palindrome (40214111141204).

The spelling of 20102101021102 in words is "twenty trillion, one hundred two billion, one hundred one million, twenty-one thousand, one hundred two".