21311232022113 has 16 divisors (see below), whose sum is σ = 31006944654336. Its totient is φ = 12912236117840.

The previous prime is 21311232022109. The next prime is 21311232022123. The reversal of 21311232022113 is 31122023211312.

It is a cyclic number.

It is not a de Polignac number, because 21311232022113 - 2² = 21311232022109 is a prime.

It is a super-2 number, since 2×21311232022113² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21311232022123) 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, 91433781 + ... + 91666562.

It is an arithmetic number, because the mean of its divisors is an integer number (1937934040896).

Almost surely, 2^{21311232022113} is an apocalyptic number.

It is an amenable number.

21311232022113 is a deficient number, since it is larger than the sum of its proper divisors (9695712632223).

21311232022113 is a wasteful number, since it uses less digits than its factorization.

21311232022113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183103884.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21311232022113 its reverse (31122023211312), we get a palindrome (52433255233425).

The spelling of 21311232022113 in words is "twenty-one trillion, three hundred eleven billion, two hundred thirty-two million, twenty-two thousand, one hundred thirteen".