20121332031 has 6 divisors (see below), whose sum is σ = 29064146280. Its totient is φ = 13414221348.

The previous prime is 20121332003. The next prime is 20121332041. The reversal of 20121332031 is 13023312102.

It is not a de Polignac number, because 20121332031 - 2⁵ = 20121331999 is a prime.

It is a super-2 number, since 2×20121332031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20121331995 and 20121332013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121332041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117851771 + ... + 1117851788.

It is an arithmetic number, because the mean of its divisors is an integer number (4844024380).

Almost surely, 2^20121332031 is an apocalyptic number.

20121332031 is a deficient number, since it is larger than the sum of its proper divisors (8942814249).

20121332031 is a wasteful number, since it uses less digits than its factorization.

20121332031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235703565 (or 2235703562 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20121332031 its reverse (13023312102), we get a palindrome (33144644133).

The spelling of 20121332031 in words is "twenty billion, one hundred twenty-one million, three hundred thirty-two thousand, thirty-one".