101203019977 has 2 divisors, whose sum is σ = 101203019978. Its totient is φ = 101203019976.

The previous prime is 101203019959. The next prime is 101203020007. The reversal of 101203019977 is 779910302101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76030341696 + 25172678281 = 275736^2 + 158659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101203019977 is a prime.

It is a super-2 number, since 2×101203019977² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101203019917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50601509988 + 50601509989.

It is an arithmetic number, because the mean of its divisors is an integer number (50601509989).

Almost surely, 2^101203019977 is an apocalyptic number.

It is an amenable number.

101203019977 is a deficient number, since it is larger than the sum of its proper divisors (1).

101203019977 is an equidigital number, since it uses as much as digits as its factorization.

101203019977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 40.

The spelling of 101203019977 in words is "one hundred one billion, two hundred three million, nineteen thousand, nine hundred seventy-seven".