101053573621 has 72 divisors (see below), whose sum is σ = 141437140152. Its totient is φ = 71490988800.

The previous prime is 101053573613. The next prime is 101053573633. The reversal of 101053573621 is 126375350101.

It can be written as a sum of positive squares in 4 ways, for example, as 11703994225 + 89349579396 = 108185^2 + 298914^2 .

It is not a de Polignac number, because 101053573621 - 2³ = 101053573613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101053573661) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4690951 + ... + 4712443.

Almost surely, 2^101053573621 is an apocalyptic number.

101053573621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101053573621 is a deficient number, since it is larger than the sum of its proper divisors (40383566531).

101053573621 is a wasteful number, since it uses less digits than its factorization.

101053573621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21603 (or 21585 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The spelling of 101053573621 in words is "one hundred one billion, fifty-three million, five hundred seventy-three thousand, six hundred twenty-one".