212102220231 has 36 divisors (see below), whose sum is σ = 354477574360. Its totient is φ = 121781167200.

The previous prime is 212102220229. The next prime is 212102220233. The reversal of 212102220231 is 132022201212.

212102220231 is a `hidden beast` number, since 2 + 1 + 210 + 2 + 220 + 231 = 666.

It is an interprime number because it is at equal distance from previous prime (212102220229) and next prime (212102220233).

It is not a de Polignac number, because 212102220231 - 2¹ = 212102220229 is a prime.

It is a super-2 number, since 2×212102220231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102220233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5104780 + ... + 5146161.

Almost surely, 2^212102220231 is an apocalyptic number.

212102220231 is a deficient number, since it is larger than the sum of its proper divisors (142375354129).

212102220231 is a wasteful number, since it uses less digits than its factorization.

212102220231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10250988 (or 10250974 counting only the distinct ones).

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

Adding to 212102220231 its reverse (132022201212), we get a palindrome (344124421443).

The spelling of 212102220231 in words is "two hundred twelve billion, one hundred two million, two hundred twenty thousand, two hundred thirty-one".