202221212011020 has 72 divisors (see below), whose sum is σ = 629982838880304. Its totient is φ = 52468206357888.

The previous prime is 202221212011001. The next prime is 202221212011037. The reversal of 202221212011020 is 20110212122202.

It is a happy number.

202221212011020 is a `hidden beast` number, since 20 + 222 + 121 + 201 + 102 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 202221212010984 and 202221212011002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15181766014 + ... + 15181779333.

Almost surely, 2^{202221212011020} is an apocalyptic number.

202221212011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202221212011020 is an abundant number, since it is smaller than the sum of its proper divisors (427761626869284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202221212011020 is a wasteful number, since it uses less digits than its factorization.

202221212011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30363545399 (or 30363545394 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202221212011020 its reverse (20110212122202), we get a palindrome (222331424133222).

The spelling of 202221212011020 in words is "two hundred two trillion, two hundred twenty-one billion, two hundred twelve million, eleven thousand, twenty".