212120100202220 has 36 divisors (see below), whose sum is σ = 518179101924960. Its totient is φ = 72726891497568.

The previous prime is 212120100202193. The next prime is 212120100202247. The reversal of 212120100202220 is 22202001021212.

It is a happy number.

212120100202220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212120100202193) and next prime (212120100202247).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108224539940 + ... + 108224541899.

It is an arithmetic number, because the mean of its divisors is an integer number (14393863942360).

Almost surely, 2^{212120100202220} is an apocalyptic number.

212120100202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212120100202220 is an abundant number, since it is smaller than the sum of its proper divisors (306059001722740).

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

212120100202220 is a wasteful number, since it uses less digits than its factorization.

212120100202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216449081862 (or 216449081853 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212120100202220 its reverse (22202001021212), we get a palindrome (234322101223432).

The spelling of 212120100202220 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred million, two hundred two thousand, two hundred twenty".