21232133121031 has 16 divisors (see below), whose sum is σ = 24857344572480. Its totient is φ = 17754941675520.

The previous prime is 21232133121029. The next prime is 21232133121041. The reversal of 21232133121031 is 13012133123212.

It is not a de Polignac number, because 21232133121031 - 2¹ = 21232133121029 is a prime.

It is a super-2 number, since 2×21232133121031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21232133120987 and 21232133121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232133121041) 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, 43974255 + ... + 44454463.

It is an arithmetic number, because the mean of its divisors is an integer number (1553584035780).

Almost surely, 2^{21232133121031} is an apocalyptic number.

21232133121031 is a deficient number, since it is larger than the sum of its proper divisors (3625211451449).

21232133121031 is a wasteful number, since it uses less digits than its factorization.

21232133121031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634314.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21232133121031 its reverse (13012133123212), we get a palindrome (34244266244243).

The spelling of 21232133121031 in words is "twenty-one trillion, two hundred thirty-two billion, one hundred thirty-three million, one hundred twenty-one thousand, thirty-one".