101321210019973 has 2 divisors, whose sum is σ = 101321210019974. Its totient is φ = 101321210019972.

The previous prime is 101321210019943. The next prime is 101321210020021. The reversal of 101321210019973 is 379910012123101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97676100466884 + 3645109553089 = 9883122^2 + 1909217^2 .

It is a cyclic number.

It is not a de Polignac number, because 101321210019973 - 2²⁹ = 101320673149061 is a prime.

It is a super-2 number, since 2×101321210019973² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101321210019943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50660605009986 + 50660605009987.

It is an arithmetic number, because the mean of its divisors is an integer number (50660605009987).

Almost surely, 2^{101321210019973} is an apocalyptic number.

It is an amenable number.

101321210019973 is a deficient number, since it is larger than the sum of its proper divisors (1).

101321210019973 is an equidigital number, since it uses as much as digits as its factorization.

101321210019973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 40.

The spelling of 101321210019973 in words is "one hundred one trillion, three hundred twenty-one billion, two hundred ten million, nineteen thousand, nine hundred seventy-three".