126133331621 has 8 divisors (see below), whose sum is σ = 137637141600. Its totient is φ = 114635712240.

The previous prime is 126133331617. The next prime is 126133331633.

126133331621 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126133331621 - 2² = 126133331617 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 (126133331221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1504991 + ... + 1586588.

It is an arithmetic number, because the mean of its divisors is an integer number (17204642700).

Almost surely, 2^126133331621 is an apocalyptic number.

126133331621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126133331621 is a deficient number, since it is larger than the sum of its proper divisors (11503809979).

126133331621 is a wasteful number, since it uses less digits than its factorization.

126133331621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3095299.

The product of its digits is 11664, while the sum is 32.

It can be divided in two parts, 126133 and 331621, that added together give a palindrome (457754).

The spelling of 126133331621 in words is "one hundred twenty-six billion, one hundred thirty-three million, three hundred thirty-one thousand, six hundred twenty-one".