12401222210421 has 64 divisors (see below), whose sum is σ = 18520149491712. Its totient is φ = 7317597600000.

The previous prime is 12401222210393. The next prime is 12401222210423.

12401222210421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12401222210421 - 2¹⁸ = 12401221948277 is a prime.

It is a super-2 number, since 2×12401222210421² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12401222210391 and 12401222210400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12401222210423) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1404278476 + ... + 1404287306.

It is an arithmetic number, because the mean of its divisors is an integer number (289377335808).

Almost surely, 2^{12401222210421} is an apocalyptic number.

12401222210421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12401222210421 is a deficient number, since it is larger than the sum of its proper divisors (6118927281291).

12401222210421 is a wasteful number, since it uses less digits than its factorization.

12401222210421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15914.

The product of its (nonzero) digits is 1024, while the sum is 24.

It can be divided in two parts, 1240122 and 2210421, that added together give a palindrome (3450543).

The spelling of 12401222210421 in words is "twelve trillion, four hundred one billion, two hundred twenty-two million, two hundred ten thousand, four hundred twenty-one".