212021202202220 has 48 divisors (see below), whose sum is σ = 471444434159328. Its totient is φ = 79818213565440.

The previous prime is 212021202202171. The next prime is 212021202202279. The reversal of 212021202202220 is 22202202120212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 212021202202192 and 212021202202201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11816234 + ... + 23741646.

It is an arithmetic number, because the mean of its divisors is an integer number (9821759044986).

Almost surely, 2^{212021202202220} is an apocalyptic number.

212021202202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021202202220 is an abundant number, since it is smaller than the sum of its proper divisors (259423231957108).

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

212021202202220 is a wasteful number, since it uses less digits than its factorization.

212021202202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11977730 (or 11977728 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 212021202202220 its reverse (22202202120212), we get a palindrome (234223404322432).

The spelling of 212021202202220 in words is "two hundred twelve trillion, twenty-one billion, two hundred two million, two hundred two thousand, two hundred twenty".