12522072021 has 8 divisors (see below), whose sum is σ = 16700739264. Its totient is φ = 8345726400.

The previous prime is 12522072001. The next prime is 12522072029. The reversal of 12522072021 is 12027022521.

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

It is not a de Polignac number, because 12522072021 - 2⁶ = 12522071957 is a prime.

It is a super-2 number, since 2×12522072021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12522071982 and 12522072000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12522072029) 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, 567780 + ... + 589421.

It is an arithmetic number, because the mean of its divisors is an integer number (2087592408).

Almost surely, 2^12522072021 is an apocalyptic number.

It is an amenable number.

12522072021 is a deficient number, since it is larger than the sum of its proper divisors (4178667243).

12522072021 is a wasteful number, since it uses less digits than its factorization.

12522072021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160811.

The product of its (nonzero) digits is 1120, while the sum is 24.

Adding to 12522072021 its reverse (12027022521), we get a palindrome (24549094542).

The spelling of 12522072021 in words is "twelve billion, five hundred twenty-two million, seventy-two thousand, twenty-one".