101212010021977 has 2 divisors, whose sum is σ = 101212010021978. Its totient is φ = 101212010021976.

The previous prime is 101212010021957. The next prime is 101212010021999. The reversal of 101212010021977 is 779120010212101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99735794741961 + 1476215280016 = 9986781^2 + 1214996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212010021977 is a prime.

It is not a weakly prime, because it can be changed into another prime (101212010021957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606005010988 + 50606005010989.

It is an arithmetic number, because the mean of its divisors is an integer number (50606005010989).

Almost surely, 2^{101212010021977} is an apocalyptic number.

It is an amenable number.

101212010021977 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212010021977 is an equidigital number, since it uses as much as digits as its factorization.

101212010021977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 34.

The spelling of 101212010021977 in words is "one hundred one trillion, two hundred twelve billion, ten million, twenty-one thousand, nine hundred seventy-seven".