21140101404 has 72 divisors (see below), whose sum is σ = 57770316240. Its totient is φ = 6495386112.

The previous prime is 21140101399. The next prime is 21140101439. The reversal of 21140101404 is 40410104112.

21140101404 is a `hidden beast` number, since 21 + 140 + 101 + 404 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392349 + ... + 442964.

Almost surely, 2^21140101404 is an apocalyptic number.

It is an amenable number.

21140101404 is an abundant number, since it is smaller than the sum of its proper divisors (36630214836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21140101404 is a wasteful number, since it uses less digits than its factorization.

21140101404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835379 (or 835374 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21140101404 its reverse (40410104112), we get a palindrome (61550205516).

The spelling of 21140101404 in words is "twenty-one billion, one hundred forty million, one hundred one thousand, four hundred four".