12027022521 has 32 divisors (see below), whose sum is σ = 17124099840. Its totient is φ = 7482310656.

The previous prime is 12027022517. The next prime is 12027022583. The reversal of 12027022521 is 12522072021.

It is not a de Polignac number, because 12027022521 - 2² = 12027022517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12027022491 and 12027022500.

It is not an unprimeable number, because it can be changed into a prime (12027062521) 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, 2999500 + ... + 3003506.

It is an arithmetic number, because the mean of its divisors is an integer number (535128120).

Almost surely, 2^12027022521 is an apocalyptic number.

It is an amenable number.

12027022521 is a deficient number, since it is larger than the sum of its proper divisors (5097077319).

12027022521 is a wasteful number, since it uses less digits than its factorization.

12027022521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513.

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

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

The spelling of 12027022521 in words is "twelve billion, twenty-seven million, twenty-two thousand, five hundred twenty-one".