212211010202220 has 72 divisors (see below), whose sum is σ = 645311984859360. Its totient is φ = 56448481497600.

The previous prime is 212211010202197. The next prime is 212211010202231. The reversal of 212211010202220 is 22202010112212.

It is a happy number.

212211010202220 is a `hidden beast` number, since 2 + 1 + 221 + 10 + 10 + 202 + 220 = 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 = 212211010202193 and 212211010202202.

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, 1469940360 + ... + 1470084719.

It is an arithmetic number, because the mean of its divisors is an integer number (8962666456380).

Almost surely, 2^{212211010202220} is an apocalyptic number.

212211010202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212211010202220 is an abundant number, since it is smaller than the sum of its proper divisors (433100974657140).

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

212211010202220 is a wasteful number, since it uses less digits than its factorization.

212211010202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940025495 (or 2940025490 counting only the distinct ones).

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

Adding to 212211010202220 its reverse (22202010112212), we get a palindrome (234413020314432).

The spelling of 212211010202220 in words is "two hundred twelve trillion, two hundred eleven billion, ten million, two hundred two thousand, two hundred twenty".