21313102101 has 8 divisors (see below), whose sum is σ = 28436663424. Its totient is φ = 14199137760.

The previous prime is 21313102087. The next prime is 21313102103. The reversal of 21313102101 is 10120131312.

It is a happy number.

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

It is not a de Polignac number, because 21313102101 - 2¹⁵ = 21313069333 is a prime.

It is a super-2 number, since 2×21313102101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313102103) 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, 2394061 + ... + 2402946.

It is an arithmetic number, because the mean of its divisors is an integer number (3554582928).

Almost surely, 2^21313102101 is an apocalyptic number.

It is an amenable number.

21313102101 is a deficient number, since it is larger than the sum of its proper divisors (7123561323).

21313102101 is a wasteful number, since it uses less digits than its factorization.

21313102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4798491.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21313102101 its reverse (10120131312), we get a palindrome (31433233413).

The spelling of 21313102101 in words is "twenty-one billion, three hundred thirteen million, one hundred two thousand, one hundred one".