212100121020222 has 32 divisors (see below), whose sum is σ = 471334901644800. Its totient is φ = 70699845433464.

The previous prime is 212100121020197. The next prime is 212100121020253. The reversal of 212100121020222 is 222020121001212.

It is a happy number.

212100121020222 is a `hidden beast` number, since 2 + 1 + 210 + 0 + 1 + 210 + 20 + 222 = 666.

It is a super-2 number, since 2×212100121020222² (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 = 212100121020195 and 212100121020204.

It is a congruent number.

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, 15065883 + ... + 25518249.

It is an arithmetic number, because the mean of its divisors is an integer number (14729215676400).

Almost surely, 2^{212100121020222} is an apocalyptic number.

212100121020222 is an abundant number, since it is smaller than the sum of its proper divisors (259234780624578).

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

212100121020222 is a wasteful number, since it uses less digits than its factorization.

212100121020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10828157 (or 10828151 counting only the distinct ones).

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

Adding to 212100121020222 its reverse (222020121001212), we get a palindrome (434120242021434).

The spelling of 212100121020222 in words is "two hundred twelve trillion, one hundred billion, one hundred twenty-one million, twenty thousand, two hundred twenty-two".