21230200232111 has 4 divisors (see below), whose sum is σ = 22863292557672. Its totient is φ = 19597107906552.

The previous prime is 21230200232083. The next prime is 21230200232173. The reversal of 21230200232111 is 11123200203212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21230200232111 - 2²² = 21230196037807 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 (21230200232011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816546162761 + ... + 816546162786.

It is an arithmetic number, because the mean of its divisors is an integer number (5715823139418).

Almost surely, 2^{21230200232111} is an apocalyptic number.

21230200232111 is a deficient number, since it is larger than the sum of its proper divisors (1633092325561).

21230200232111 is a wasteful number, since it uses less digits than its factorization.

21230200232111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633092325560.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21230200232111 its reverse (11123200203212), we get a palindrome (32353400435323).

The spelling of 21230200232111 in words is "twenty-one trillion, two hundred thirty billion, two hundred million, two hundred thirty-two thousand, one hundred eleven".