1202313231021 has 32 divisors (see below), whose sum is σ = 1843542835200. Its totient is φ = 682755621120.

The previous prime is 1202313231013. The next prime is 1202313231023. The reversal of 1202313231021 is 1201323132021.

It is not a de Polignac number, because 1202313231021 - 2³ = 1202313231013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202313231023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2176240 + ... + 2672198.

It is an arithmetic number, because the mean of its divisors is an integer number (57610713600).

Almost surely, 2^{1202313231021} is an apocalyptic number.

It is an amenable number.

1202313231021 is a deficient number, since it is larger than the sum of its proper divisors (641229604179).

1202313231021 is a wasteful number, since it uses less digits than its factorization.

1202313231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496689.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1202313231021 its reverse (1201323132021), we get a palindrome (2403636363042).

The spelling of 1202313231021 in words is "one trillion, two hundred two billion, three hundred thirteen million, two hundred thirty-one thousand, twenty-one".