12202521621 has 32 divisors (see below), whose sum is σ = 16937372160. Its totient is φ = 7809844224.

The previous prime is 12202521619. The next prime is 12202521623. The reversal of 12202521621 is 12612520221.

It is an interprime number because it is at equal distance from previous prime (12202521619) and next prime (12202521623).

It is not a de Polignac number, because 12202521621 - 2¹ = 12202521619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12202521591 and 12202521600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202521623) 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, 1415095 + ... + 1423691.

It is an arithmetic number, because the mean of its divisors is an integer number (529292880).

Almost surely, 2^12202521621 is an apocalyptic number.

It is an amenable number.

12202521621 is a deficient number, since it is larger than the sum of its proper divisors (4734850539).

12202521621 is a wasteful number, since it uses less digits than its factorization.

12202521621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8845.

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 12202521621 in words is "twelve billion, two hundred two million, five hundred twenty-one thousand, six hundred twenty-one".