212222300121 has 192 divisors, whose sum is σ = 379225566720. Its totient is φ = 112945029120.

The previous prime is 212222300113. The next prime is 212222300149. The reversal of 212222300121 is 121003222212.

212222300121 is a `hidden beast` number, since 21 + 2 + 222 + 300 + 121 = 666.

It is not a de Polignac number, because 212222300121 - 2³ = 212222300113 is a prime.

It is a super-2 number, since 2×212222300121² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212222300094 and 212222300103.

It is not an unprimeable number, because it can be changed into a prime (212222300221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 460351831 + ... + 460352291.

It is an arithmetic number, because the mean of its divisors is an integer number (1975133160).

Almost surely, 2^212222300121 is an apocalyptic number.

It is an amenable number.

212222300121 is a deficient number, since it is larger than the sum of its proper divisors (167003266599).

212222300121 is a wasteful number, since it uses less digits than its factorization.

212222300121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212222300121 its reverse (121003222212), we get a palindrome (333225522333).

The spelling of 212222300121 in words is "two hundred twelve billion, two hundred twenty-two million, three hundred thousand, one hundred twenty-one".