2021424131 has 4 divisors (see below), whose sum is σ = 2041049712. Its totient is φ = 2001798552.

The previous prime is 2021424127. The next prime is 2021424157. The reversal of 2021424131 is 1314241202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021424131 - 2² = 2021424127 is a prime.

It is a super-2 number, since 2×2021424131² = 8172311034778210322, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (2021424121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9812636 + ... + 9812841.

It is an arithmetic number, because the mean of its divisors is an integer number (510262428).

Almost surely, 2^2021424131 is an apocalyptic number.

2021424131 is a deficient number, since it is larger than the sum of its proper divisors (19625581).

2021424131 is a wasteful number, since it uses less digits than its factorization.

2021424131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19625580.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2021424131 is about 44960.2505664726. The cubic root of 2021424131 is about 1264.4038666571.

Adding to 2021424131 its reverse (1314241202), we get a palindrome (3335665333).

The spelling of 2021424131 in words is "two billion, twenty-one million, four hundred twenty-four thousand, one hundred thirty-one".