126223322621 has 4 divisors (see below), whose sum is σ = 137698170144. Its totient is φ = 114748475100.

The previous prime is 126223322579. The next prime is 126223322657.

126223322621 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 126223322621 - 2¹⁸ = 126223060477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126223322671) 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, 5737423745 + ... + 5737423766.

It is an arithmetic number, because the mean of its divisors is an integer number (34424542536).

Almost surely, 2^126223322621 is an apocalyptic number.

126223322621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126223322621 is a deficient number, since it is larger than the sum of its proper divisors (11474847523).

126223322621 is a wasteful number, since it uses less digits than its factorization.

126223322621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11474847522.

The product of its digits is 20736, while the sum is 32.

It can be divided in two parts, 126223 and 322621, that added together give a palindrome (448844).

The spelling of 126223322621 in words is "one hundred twenty-six billion, two hundred twenty-three million, three hundred twenty-two thousand, six hundred twenty-one".