120012011231 has 12 divisors (see below), whose sum is σ = 144109224000. Its totient is φ = 99549132480.

The previous prime is 120012011221. The next prime is 120012011239. The reversal of 120012011231 is 132110210021.

It is not a de Polignac number, because 120012011231 - 2¹⁰ = 120012010207 is a prime.

It is a super-2 number, since 2×120012011231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012011239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39502106 + ... + 39505143.

It is an arithmetic number, because the mean of its divisors is an integer number (12009102000).

Almost surely, 2^120012011231 is an apocalyptic number.

120012011231 is a deficient number, since it is larger than the sum of its proper divisors (24097212769).

120012011231 is an equidigital number, since it uses as much as digits as its factorization.

120012011231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79007294 (or 79007287 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 120012011231 its reverse (132110210021), we get a palindrome (252122221252).

The spelling of 120012011231 in words is "one hundred twenty billion, twelve million, eleven thousand, two hundred thirty-one".