202100020102 has 4 divisors (see below), whose sum is σ = 303150030156. Its totient is φ = 101050010050.

The previous prime is 202100020099. The next prime is 202100020117. The reversal of 202100020102 is 201020001202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201020001202 = 2 ⋅100510000601.

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, 50525005024 + ... + 50525005027.

It is an arithmetic number, because the mean of its divisors is an integer number (75787507539).

Almost surely, 2^202100020102 is an apocalyptic number.

202100020102 is a deficient number, since it is larger than the sum of its proper divisors (101050010054).

202100020102 is a wasteful number, since it uses less digits than its factorization.

202100020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101050010053.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 202100020102 its reverse (201020001202), we get a palindrome (403120021304).

The spelling of 202100020102 in words is "two hundred two billion, one hundred million, twenty thousand, one hundred two".