20212210210102 has 4 divisors (see below), whose sum is σ = 30318315315156. Its totient is φ = 10106105105050.

The previous prime is 20212210210061. The next prime is 20212210210139. The reversal of 20212210210102 is 20101201221202.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 5053052552524 + ... + 5053052552527.

It is an arithmetic number, because the mean of its divisors is an integer number (7579578828789).

Almost surely, 2^{20212210210102} is an apocalyptic number.

20212210210102 is a deficient number, since it is larger than the sum of its proper divisors (10106105105054).

20212210210102 is a wasteful number, since it uses less digits than its factorization.

20212210210102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106105105053.

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

Adding to 20212210210102 its reverse (20101201221202), we get a palindrome (40313411431304).

The spelling of 20212210210102 in words is "twenty trillion, two hundred twelve billion, two hundred ten million, two hundred ten thousand, one hundred two".