20202100220121 has 16 divisors (see below), whose sum is σ = 27028600447680. Its totient is φ = 13421892948800.

The previous prime is 20202100220047. The next prime is 20202100220147. The reversal of 20202100220121 is 12102200120202.

It is a cyclic number.

It is not a de Polignac number, because 20202100220121 - 2¹³ = 20202100211929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20202100220121.

It is not an unprimeable number, because it can be changed into a prime (20202100220191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6085230 + ... + 8799671.

It is an arithmetic number, because the mean of its divisors is an integer number (1689287527980).

Almost surely, 2^{20202100220121} is an apocalyptic number.

It is an amenable number.

20202100220121 is a deficient number, since it is larger than the sum of its proper divisors (6826500227559).

20202100220121 is a wasteful number, since it uses less digits than its factorization.

20202100220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14886456.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20202100220121 its reverse (12102200120202), we get a palindrome (32304300340323).

The spelling of 20202100220121 in words is "twenty trillion, two hundred two billion, one hundred million, two hundred twenty thousand, one hundred twenty-one".