12260023156621 has 4 divisors (see below), whose sum is σ = 12260280157852. Its totient is φ = 12259766155392.

The previous prime is 12260023156613. The next prime is 12260023156639. The reversal of 12260023156621 is 12665132006221.

12260023156621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6686434042596 + 5573589114025 = 2585814^2 + 2360845^2 .

It is a cyclic number.

It is not a de Polignac number, because 12260023156621 - 2³ = 12260023156613 is a prime.

It is a super-2 number, since 2×12260023156621² (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 (12260023156651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128429046 + ... + 128524471.

It is an arithmetic number, because the mean of its divisors is an integer number (3065070039463).

Almost surely, 2^{12260023156621} is an apocalyptic number.

It is an amenable number.

12260023156621 is a deficient number, since it is larger than the sum of its proper divisors (257001231).

12260023156621 is an equidigital number, since it uses as much as digits as its factorization.

12260023156621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257001230.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 12260023156621 in words is "twelve trillion, two hundred sixty billion, twenty-three million, one hundred fifty-six thousand, six hundred twenty-one".