12021300031 has 8 divisors (see below), whose sum is σ = 13247086160. Its totient is φ = 10838524032.

The previous prime is 12021300017. The next prime is 12021300059. The reversal of 12021300031 is 13000312021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12021300031 - 2⁷ = 12021299903 is a prime.

It is a super-2 number, since 2×12021300031² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021299984 and 12021300020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021301031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10751946 + ... + 10753063.

It is an arithmetic number, because the mean of its divisors is an integer number (1655885770).

Almost surely, 2^12021300031 is an apocalyptic number.

12021300031 is a deficient number, since it is larger than the sum of its proper divisors (1225786129).

12021300031 is a wasteful number, since it uses less digits than its factorization.

12021300031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21505065.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 12021300031 its reverse (13000312021), we get a palindrome (25021612052).

The spelling of 12021300031 in words is "twelve billion, twenty-one million, three hundred thousand, thirty-one".