1021201231123 has 8 divisors (see below), whose sum is σ = 1076229907200. Its totient is φ = 966300679368.

The previous prime is 1021201231109. The next prime is 1021201231229. The reversal of 1021201231123 is 3211321021201.

1021201231123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1021201231123 - 2²⁵ = 1021167676691 is a prime.

It is a super-2 number, since 2×1021201231123² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021201231123.

It is not an unprimeable number, because it can be changed into a prime (1021201231723) 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, 32014711 + ... + 32046592.

It is an arithmetic number, because the mean of its divisors is an integer number (134528738400).

Almost surely, 2^{1021201231123} is an apocalyptic number.

1021201231123 is a deficient number, since it is larger than the sum of its proper divisors (55028676077).

1021201231123 is an equidigital number, since it uses as much as digits as its factorization.

1021201231123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64062161.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1021201231123 its reverse (3211321021201), we get a palindrome (4232522252324).

The spelling of 1021201231123 in words is "one trillion, twenty-one billion, two hundred one million, two hundred thirty-one thousand, one hundred twenty-three".