2021131379 has 2 divisors, whose sum is σ = 2021131380. Its totient is φ = 2021131378.

The previous prime is 2021131373. The next prime is 2021131393. The reversal of 2021131379 is 9731311202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021131379 - 2²⁰ = 2020082803 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021131373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010565689 + 1010565690.

It is an arithmetic number, because the mean of its divisors is an integer number (1010565690).

Almost surely, 2^2021131379 is an apocalyptic number.

2021131379 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021131379 is an equidigital number, since it uses as much as digits as its factorization.

2021131379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 2021131379 is about 44956.9947727826. The cubic root of 2021131379 is about 1264.3428247698.

The spelling of 2021131379 in words is "two billion, twenty-one million, one hundred thirty-one thousand, three hundred seventy-nine".