126321232120 has 16 divisors (see below), whose sum is σ = 284222772360. Its totient is φ = 50528492832.

The previous prime is 126321232097. The next prime is 126321232123. The reversal of 126321232120 is 21232123621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126321232123) 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, 1579015362 + ... + 1579015441.

Almost surely, 2^126321232120 is an apocalyptic number.

126321232120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126321232120 is an abundant number, since it is smaller than the sum of its proper divisors (157901540240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126321232120 is a wasteful number, since it uses less digits than its factorization.

126321232120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158030814 (or 3158030810 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 126321232120 its reverse (21232123621), we get a palindrome (147553355741).

The spelling of 126321232120 in words is "one hundred twenty-six billion, three hundred twenty-one million, two hundred thirty-two thousand, one hundred twenty".