212101000031 has 2 divisors, whose sum is σ = 212101000032. Its totient is φ = 212101000030.

The previous prime is 212101000019. The next prime is 212101000039. The reversal of 212101000031 is 130000101212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212101000031 - 2¹⁰ = 212100999007 is a prime.

It is a super-2 number, since 2×212101000031² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 212100999976 and 212101000021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212101000039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050500015 + 106050500016.

It is an arithmetic number, because the mean of its divisors is an integer number (106050500016).

Almost surely, 2^212101000031 is an apocalyptic number.

212101000031 is a deficient number, since it is larger than the sum of its proper divisors (1).

212101000031 is an equidigital number, since it uses as much as digits as its factorization.

212101000031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 212101000031 its reverse (130000101212), we get a palindrome (342101101243).

The spelling of 212101000031 in words is "two hundred twelve billion, one hundred one million, thirty-one", and thus it is an aban number.