12021010133231 has 16 divisors (see below), whose sum is σ = 13471434714528. Its totient is φ = 10630325836800.

The previous prime is 12021010133183. The next prime is 12021010133263. The reversal of 12021010133231 is 13233101012021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12021010133231 - 2²² = 12021005938927 is a prime.

It is a super-2 number, since 2×12021010133231² (a number of 27 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 (12021010103231) 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, 1756070 + ... + 5208243.

It is an arithmetic number, because the mean of its divisors is an integer number (841964669658).

Almost surely, 2^{12021010133231} is an apocalyptic number.

12021010133231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12021010133231 is a deficient number, since it is larger than the sum of its proper divisors (1450424581297).

12021010133231 is a wasteful number, since it uses less digits than its factorization.

12021010133231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6968602.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12021010133231 its reverse (13233101012021), we get a palindrome (25254111145252).

The spelling of 12021010133231 in words is "twelve trillion, twenty-one billion, ten million, one hundred thirty-three thousand, two hundred thirty-one".