12867422476821 has 16 divisors (see below), whose sum is σ = 18716326440960. Its totient is φ = 7798406379120.

The previous prime is 12867422476787. The next prime is 12867422476847.

12867422476821 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12867422476821 - 2¹¹ = 12867422474773 is a prime.

It is a super-2 number, since 2×12867422476821² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12867422476021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9527610 + ... + 10793988.

It is an arithmetic number, because the mean of its divisors is an integer number (1169770402560).

Almost surely, 2^{12867422476821} is an apocalyptic number.

12867422476821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12867422476821 is a deficient number, since it is larger than the sum of its proper divisors (5848903964139).

12867422476821 is a wasteful number, since it uses less digits than its factorization.

12867422476821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574296.

The product of its digits is 28901376, while the sum is 60.

The spelling of 12867422476821 in words is "twelve trillion, eight hundred sixty-seven billion, four hundred twenty-two million, four hundred seventy-six thousand, eight hundred twenty-one".