21400231101 has 8 divisors (see below), whose sum is σ = 28691286624. Its totient is φ = 14187998160.

The previous prime is 21400231093. The next prime is 21400231103. The reversal of 21400231101 is 10113200412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21400231101 - 2³ = 21400231093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21400231103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19705011 + ... + 19706096.

It is an arithmetic number, because the mean of its divisors is an integer number (3586410828).

Almost surely, 2^21400231101 is an apocalyptic number.

It is an amenable number.

21400231101 is a deficient number, since it is larger than the sum of its proper divisors (7291055523).

21400231101 is a wasteful number, since it uses less digits than its factorization.

21400231101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39411291.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21400231101 its reverse (10113200412), we get a palindrome (31513431513).

The spelling of 21400231101 in words is "twenty-one billion, four hundred million, two hundred thirty-one thousand, one hundred one".