21321892101 has 48 divisors (see below), whose sum is σ = 30942535680. Its totient is φ = 13021715520.

The previous prime is 21321892091. The next prime is 21321892121. The reversal of 21321892101 is 10129812312.

It is not a de Polignac number, because 21321892101 - 2⁷ = 21321891973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321892121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25413040 + ... + 25413878.

It is an arithmetic number, because the mean of its divisors is an integer number (644636160).

Almost surely, 2^21321892101 is an apocalyptic number.

It is an amenable number.

21321892101 is a deficient number, since it is larger than the sum of its proper divisors (9620643579).

21321892101 is a wasteful number, since it uses less digits than its factorization.

21321892101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The spelling of 21321892101 in words is "twenty-one billion, three hundred twenty-one million, eight hundred ninety-two thousand, one hundred one".