12000077000021 has 4 divisors (see below), whose sum is σ = 13090993090944. Its totient is φ = 10909160909100.

The previous prime is 12000077000017. The next prime is 12000077000161.

12000077000021 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12000077000021 - 2² = 12000077000017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000076999957 and 12000077000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000077000011) 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, 545458045445 + ... + 545458045466.

It is an arithmetic number, because the mean of its divisors is an integer number (3272748272736).

Almost surely, 2^{12000077000021} is an apocalyptic number.

12000077000021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12000077000021 is a deficient number, since it is larger than the sum of its proper divisors (1090916090923).

12000077000021 is a wasteful number, since it uses less digits than its factorization.

12000077000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090916090922.

The product of its (nonzero) digits is 196, while the sum is 20.

It can be divided in two parts, 1200007 and 7000021, that added together give a palindrome (8200028).

The spelling of 12000077000021 in words is "twelve trillion, seventy-seven million, twenty-one", and thus it is an aban number and an uban number.