12021352333431 has 16 divisors (see below), whose sum is σ = 18496098276864. Its totient is φ = 6802651527264.

The previous prime is 12021352333423. The next prime is 12021352333453. The reversal of 12021352333431 is 13433325312021.

It is not a de Polignac number, because 12021352333431 - 2³ = 12021352333423 is a prime.

It is a super-2 number, since 2×12021352333431² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12021352333392 and 12021352333401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021352333421) 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, 2778858756 + ... + 2778863081.

It is an arithmetic number, because the mean of its divisors is an integer number (1156006142304).

Almost surely, 2^{12021352333431} is an apocalyptic number.

12021352333431 is a deficient number, since it is larger than the sum of its proper divisors (6474745943433).

12021352333431 is a wasteful number, since it uses less digits than its factorization.

12021352333431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557721950.

The product of its (nonzero) digits is 38880, while the sum is 33.

Adding to 12021352333431 its reverse (13433325312021), we get a palindrome (25454677645452).

The spelling of 12021352333431 in words is "twelve trillion, twenty-one billion, three hundred fifty-two million, three hundred thirty-three thousand, four hundred thirty-one".