212220002131 has 2 divisors, whose sum is σ = 212220002132. Its totient is φ = 212220002130.

The previous prime is 212220002087. The next prime is 212220002147. The reversal of 212220002131 is 131200022212.

It is a happy number.

It is an a-pointer prime, because the next prime (212220002147) can be obtained adding 212220002131 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212220002131 is a prime.

It is a super-2 number, since 2×212220002131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212220002171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110001065 + 106110001066.

It is an arithmetic number, because the mean of its divisors is an integer number (106110001066).

Almost surely, 2^212220002131 is an apocalyptic number.

212220002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

212220002131 is an equidigital number, since it uses as much as digits as its factorization.

212220002131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212220002131 its reverse (131200022212), we get a palindrome (343420024343).

The spelling of 212220002131 in words is "two hundred twelve billion, two hundred twenty million, two thousand, one hundred thirty-one".