12021012031 has 32 divisors (see below), whose sum is σ = 14642205696. Its totient is φ = 9646560000.

The previous prime is 12021012019. The next prime is 12021012079. The reversal of 12021012031 is 13021012021.

It is not a de Polignac number, because 12021012031 - 2⁵ = 12021011999 is a prime.

It is a super-2 number, since 2×12021012031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021012431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2069331 + ... + 2075131.

It is an arithmetic number, because the mean of its divisors is an integer number (457568928).

Almost surely, 2^12021012031 is an apocalyptic number.

12021012031 is a deficient number, since it is larger than the sum of its proper divisors (2621193665).

12021012031 is a wasteful number, since it uses less digits than its factorization.

12021012031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6103.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12021012031 its reverse (13021012021), we get a palindrome (25042024052).

The spelling of 12021012031 in words is "twelve billion, twenty-one million, twelve thousand, thirty-one".