1231141123021 has 8 divisors (see below), whose sum is σ = 1251490696344. Its totient is φ = 1210796934720.

The previous prime is 1231141123019. The next prime is 1231141123027. The reversal of 1231141123021 is 1203211411321.

It can be written as a sum of positive squares in 4 ways, for example, as 160456324900 + 1070684798121 = 400570^2 + 1034739^2 .

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 1231141123021 - 2¹ = 1231141123019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231141122983 and 1231141123001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231141123027) 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, 883930 + ... + 1801003.

It is an arithmetic number, because the mean of its divisors is an integer number (156436337043).

Almost surely, 2^{1231141123021} is an apocalyptic number.

It is an amenable number.

1231141123021 is a deficient number, since it is larger than the sum of its proper divisors (20349573323).

1231141123021 is an equidigital number, since it uses as much as digits as its factorization.

1231141123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692511.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 1231141123021 its reverse (1203211411321), we get a palindrome (2434352534342).

The spelling of 1231141123021 in words is "one trillion, two hundred thirty-one billion, one hundred forty-one million, one hundred twenty-three thousand, twenty-one".