202012212121101 has 12 divisors (see below), whose sum is σ = 302602655194112. Its totient is φ = 134674808080572.

The previous prime is 202012212121091. The next prime is 202012212121151. The reversal of 202012212121101 is 101121212210202.

202012212121101 is a `hidden beast` number, since 20 + 201 + 221 + 2 + 121 + 101 = 666.

202012212121101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 202012212121101 - 2⁶ = 202012212121037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012212121151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415662987661 + ... + 415662988146.

Almost surely, 2^{202012212121101} is an apocalyptic number.

It is an amenable number.

202012212121101 is a deficient number, since it is larger than the sum of its proper divisors (100590443073011).

202012212121101 is an frugal number, since it uses more digits than its factorization.

202012212121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831325975822 (or 831325975810 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 202012212121101 its reverse (101121212210202), we get a palindrome (303133424331303).

It can be divided in two parts, 20201221 and 2121101, that added together give a palindrome (22322322).

The spelling of 202012212121101 in words is "two hundred two trillion, twelve billion, two hundred twelve million, one hundred twenty-one thousand, one hundred one".