120021131243 has 8 divisors (see below), whose sum is σ = 129266466000. Its totient is φ = 110777645088.

The previous prime is 120021131207. The next prime is 120021131249. The reversal of 120021131243 is 342131120021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120021131243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120021131249) 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, 325808 + ... + 588381.

It is an arithmetic number, because the mean of its divisors is an integer number (16158308250).

Almost surely, 2^120021131243 is an apocalyptic number.

120021131243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

120021131243 is a deficient number, since it is larger than the sum of its proper divisors (9245334757).

120021131243 is a wasteful number, since it uses less digits than its factorization.

120021131243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924301.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 120021131243 its reverse (342131120021), we get a palindrome (462152251264).

The spelling of 120021131243 in words is "one hundred twenty billion, twenty-one million, one hundred thirty-one thousand, two hundred forty-three".