202021100122102 has 4 divisors (see below), whose sum is σ = 303031650183156. Its totient is φ = 101010550061050.

The previous prime is 202021100122099. The next prime is 202021100122103. The reversal of 202021100122102 is 201221001120202.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202021100122103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505275030524 + ... + 50505275030527.

It is an arithmetic number, because the mean of its divisors is an integer number (75757912545789).

Almost surely, 2^{202021100122102} is an apocalyptic number.

202021100122102 is a deficient number, since it is larger than the sum of its proper divisors (101010550061054).

202021100122102 is a wasteful number, since it uses less digits than its factorization.

202021100122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101010550061053.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202021100122102 its reverse (201221001120202), we get a palindrome (403242101242304).

The spelling of 202021100122102 in words is "two hundred two trillion, twenty-one billion, one hundred million, one hundred twenty-two thousand, one hundred two".