101219972537 has 2 divisors, whose sum is σ = 101219972538. Its totient is φ = 101219972536.

The previous prime is 101219972489. The next prime is 101219972543. The reversal of 101219972537 is 735279912101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63918458041 + 37301514496 = 252821^2 + 193136^2 .

It is a cyclic number.

It is not a de Polignac number, because 101219972537 - 2⁶ = 101219972473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101219972491 and 101219972500.

It is not a weakly prime, because it can be changed into another prime (101219972597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50609986268 + 50609986269.

It is an arithmetic number, because the mean of its divisors is an integer number (50609986269).

Almost surely, 2^101219972537 is an apocalyptic number.

It is an amenable number.

101219972537 is a deficient number, since it is larger than the sum of its proper divisors (1).

101219972537 is an equidigital number, since it uses as much as digits as its factorization.

101219972537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 47.

The spelling of 101219972537 in words is "one hundred one billion, two hundred nineteen million, nine hundred seventy-two thousand, five hundred thirty-seven".