2021000011231 has 2 divisors, whose sum is σ = 2021000011232. Its totient is φ = 2021000011230.

The previous prime is 2021000011229. The next prime is 2021000011259. The reversal of 2021000011231 is 1321100001202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021000011231 - 2¹ = 2021000011229 is a prime.

It is a super-2 number, since 2×2021000011231² (a number of 25 digits) contains 22 as substring.

Together with 2021000011229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021000011271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010500005615 + 1010500005616.

It is an arithmetic number, because the mean of its divisors is an integer number (1010500005616).

Almost surely, 2^{2021000011231} is an apocalyptic number.

2021000011231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021000011231 is an equidigital number, since it uses as much as digits as its factorization.

2021000011231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2021000011231 its reverse (1321100001202), we get a palindrome (3342100012433).

The spelling of 2021000011231 in words is "two trillion, twenty-one billion, eleven thousand, two hundred thirty-one".