10120021231 has 4 divisors (see below), whose sum is σ = 10271066392. Its totient is φ = 9968976072.

The previous prime is 10120021213. The next prime is 10120021253. The reversal of 10120021231 is 13212002101.

10120021231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13212002101 = 59 ⋅223932239.

It is a cyclic number.

It is not a de Polignac number, because 10120021231 - 2¹⁹ = 10119496943 is a prime.

It is a super-2 number, since 2×10120021231² (a number of 21 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 (10120021271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75522480 + ... + 75522613.

It is an arithmetic number, because the mean of its divisors is an integer number (2567766598).

Almost surely, 2^10120021231 is an apocalyptic number.

10120021231 is a deficient number, since it is larger than the sum of its proper divisors (151045161).

10120021231 is an equidigital number, since it uses as much as digits as its factorization.

10120021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151045160.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10120021231 its reverse (13212002101), we get a palindrome (23332023332).

The spelling of 10120021231 in words is "ten billion, one hundred twenty million, twenty-one thousand, two hundred thirty-one".