2021411999 has 2 divisors, whose sum is σ = 2021412000. Its totient is φ = 2021411998.

The previous prime is 2021411923. The next prime is 2021412011. The reversal of 2021411999 is 9991141202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021411999 - 2¹⁶ = 2021346463 is a prime.

It is a super-2 number, since 2×2021411999² = 8172212939402352002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021411599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010705999 + 1010706000.

It is an arithmetic number, because the mean of its divisors is an integer number (1010706000).

Almost surely, 2^2021411999 is an apocalyptic number.

2021411999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021411999 is an equidigital number, since it uses as much as digits as its factorization.

2021411999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 2021411999 is about 44960.1156470933. The cubic root of 2021411999 is about 1264.4013371238.

The spelling of 2021411999 in words is "two billion, twenty-one million, four hundred eleven thousand, nine hundred ninety-nine".