120101011231 has 4 divisors (see below), whose sum is σ = 125322794352. Its totient is φ = 114879228112.

The previous prime is 120101011201. The next prime is 120101011241. The reversal of 120101011231 is 132110101021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120101011231 - 2⁹ = 120101010719 is a prime.

It is a super-2 number, since 2×120101011231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120101011201) 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, 2610891526 + ... + 2610891571.

It is an arithmetic number, because the mean of its divisors is an integer number (31330698588).

Almost surely, 2^120101011231 is an apocalyptic number.

120101011231 is a deficient number, since it is larger than the sum of its proper divisors (5221783121).

120101011231 is an equidigital number, since it uses as much as digits as its factorization.

120101011231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5221783120.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 120101011231 its reverse (132110101021), we get a palindrome (252211112252).

The spelling of 120101011231 in words is "one hundred twenty billion, one hundred one million, eleven thousand, two hundred thirty-one".