31212020100011 has 2 divisors, whose sum is σ = 31212020100012. Its totient is φ = 31212020100010.

The previous prime is 31212020099983. The next prime is 31212020100049. The reversal of 31212020100011 is 11000102021213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31212020100011 - 2²⁶ = 31211952991147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31212020100061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606010050005 + 15606010050006.

It is an arithmetic number, because the mean of its divisors is an integer number (15606010050006).

Almost surely, 2^{31212020100011} is an apocalyptic number.

31212020100011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212020100011 is an equidigital number, since it uses as much as digits as its factorization.

31212020100011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 31212020100011 its reverse (11000102021213), we get a palindrome (42212122121224).

The spelling of 31212020100011 in words is "thirty-one trillion, two hundred twelve billion, twenty million, one hundred thousand, eleven".