21231302232101 has 16 divisors (see below), whose sum is σ = 23014977168960. Its totient is φ = 19469233872000.

The previous prime is 21231302232067. The next prime is 21231302232113. The reversal of 21231302232101 is 10123220313212.

It is a cyclic number.

It is not a de Polignac number, because 21231302232101 - 2²⁶ = 21231235123237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21231302232131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2544305 + ... + 6995433.

It is an arithmetic number, because the mean of its divisors is an integer number (1438436073060).

Almost surely, 2^{21231302232101} is an apocalyptic number.

It is an amenable number.

21231302232101 is a deficient number, since it is larger than the sum of its proper divisors (1783674936859).

21231302232101 is a wasteful number, since it uses less digits than its factorization.

21231302232101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453556.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21231302232101 its reverse (10123220313212), we get a palindrome (31354522545313).

The spelling of 21231302232101 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred two million, two hundred thirty-two thousand, one hundred one".