2021210122102 has 4 divisors (see below), whose sum is σ = 3031815183156. Its totient is φ = 1010605061050.

The previous prime is 2021210122093. The next prime is 2021210122117. The reversal of 2021210122102 is 2012210121202.

It is a happy number.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505302530524 + ... + 505302530527.

It is an arithmetic number, because the mean of its divisors is an integer number (757953795789).

Almost surely, 2^{2021210122102} is an apocalyptic number.

2021210122102 is a deficient number, since it is larger than the sum of its proper divisors (1010605061054).

2021210122102 is a wasteful number, since it uses less digits than its factorization.

2021210122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010605061053.

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

Adding to 2021210122102 its reverse (2012210121202), we get a palindrome (4033420243304).

The spelling of 2021210122102 in words is "two trillion, twenty-one billion, two hundred ten million, one hundred twenty-two thousand, one hundred two".