212100121222020 has 48 divisors (see below), whose sum is σ = 659867043803520. Its totient is φ = 56560032325728.

The previous prime is 212100121222009. The next prime is 212100121222039. The reversal of 212100121222020 is 20222121001212.

It is a happy number.

212100121222020 is a `hidden beast` number, since 2 + 1 + 210 + 0 + 1 + 212 + 220 + 20 = 666.

It is a super-2 number, since 2×212100121222020² (a number of 29 digits) contains 22 as substring.

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 = 212100121221984 and 212100121222002.

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, 196389000592 + ... + 196389001671.

It is an arithmetic number, because the mean of its divisors is an integer number (13747230079240).

Almost surely, 2^{212100121222020} is an apocalyptic number.

212100121222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212100121222020 is an abundant number, since it is smaller than the sum of its proper divisors (447766922581500).

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

212100121222020 is a wasteful number, since it uses less digits than its factorization.

212100121222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392778002281 (or 392778002273 counting only the distinct ones).

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

Adding to 212100121222020 its reverse (20222121001212), we get a palindrome (232322242223232).

The spelling of 212100121222020 in words is "two hundred twelve trillion, one hundred billion, one hundred twenty-one million, two hundred twenty-two thousand, twenty".