212221101230220 has 48 divisors (see below), whose sum is σ = 594297199496448. Its totient is φ = 56584854037440.

The previous prime is 212221101230189. The next prime is 212221101230233. The reversal of 212221101230220 is 22032101122212.

It is a super-4 number, since 4×212221101230220⁴ (a number of 58 digits) contains 4444 as substring.

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, 232028026 + ... + 232940865.

It is an arithmetic number, because the mean of its divisors is an integer number (12381191656176).

Almost surely, 2^{212221101230220} is an apocalyptic number.

212221101230220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212221101230220 is an abundant number, since it is smaller than the sum of its proper divisors (382076098266228).

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

212221101230220 is a wasteful number, since it uses less digits than its factorization.

212221101230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464976510 (or 464976508 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 212221101230220 its reverse (22032101122212), we get a palindrome (234253202352432).

The spelling of 212221101230220 in words is "two hundred twelve trillion, two hundred twenty-one billion, one hundred one million, two hundred thirty thousand, two hundred twenty".