212021200031 has 2 divisors, whose sum is σ = 212021200032. Its totient is φ = 212021200030.

The previous prime is 212021199979. The next prime is 212021200043. The reversal of 212021200031 is 130002120212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212021200031 - 2³⁴ = 194841330847 is a prime.

It is a super-2 number, since 2×212021200031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212021199979 and 212021200015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021200231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010600015 + 106010600016.

It is an arithmetic number, because the mean of its divisors is an integer number (106010600016).

Almost surely, 2^212021200031 is an apocalyptic number.

212021200031 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021200031 is an equidigital number, since it uses as much as digits as its factorization.

212021200031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 212021200031 its reverse (130002120212), we get a palindrome (342023320243).

The spelling of 212021200031 in words is "two hundred twelve billion, twenty-one million, two hundred thousand, thirty-one".