312021000102061 has 2 divisors, whose sum is σ = 312021000102062. Its totient is φ = 312021000102060.

The previous prime is 312021000102029. The next prime is 312021000102179. The reversal of 312021000102061 is 160201000120213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278861610722500 + 33159389379561 = 16699150^2 + 5758419^2 .

It is a cyclic number.

It is not a de Polignac number, because 312021000102061 - 2⁵ = 312021000102029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312021000108061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156010500051030 + 156010500051031.

It is an arithmetic number, because the mean of its divisors is an integer number (156010500051031).

Almost surely, 2^{312021000102061} is an apocalyptic number.

It is an amenable number.

312021000102061 is a deficient number, since it is larger than the sum of its proper divisors (1).

312021000102061 is an equidigital number, since it uses as much as digits as its factorization.

312021000102061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 312021000102061 its reverse (160201000120213), we get a palindrome (472222000222274).

The spelling of 312021000102061 in words is "three hundred twelve trillion, twenty-one billion, one hundred two thousand, sixty-one".