2020121231331 has 16 divisors (see below), whose sum is σ = 3078308358144. Its totient is φ = 1154344344384.

The previous prime is 2020121231257. The next prime is 2020121231353. The reversal of 2020121231331 is 1331321210202.

It is not a de Polignac number, because 2020121231331 - 2⁹ = 2020121230819 is a prime.

It is a super-2 number, since 2×2020121231331² (a number of 25 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 2020121231298 and 2020121231307.

It is not an unprimeable number, because it can be changed into a prime (2020121231831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2275630 + ... + 3036236.

It is an arithmetic number, because the mean of its divisors is an integer number (192394272384).

Almost surely, 2^{2020121231331} is an apocalyptic number.

2020121231331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2020121231331 is a deficient number, since it is larger than the sum of its proper divisors (1058187126813).

2020121231331 is a wasteful number, since it uses less digits than its factorization.

2020121231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887090.

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

Adding to 2020121231331 its reverse (1331321210202), we get a palindrome (3351442441533).

The spelling of 2020121231331 in words is "two trillion, twenty billion, one hundred twenty-one million, two hundred thirty-one thousand, three hundred thirty-one".