2021853011 has 2 divisors, whose sum is σ = 2021853012. Its totient is φ = 2021853010.

The previous prime is 2021852983. The next prime is 2021853017. The reversal of 2021853011 is 1103581202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021853011 - 2¹⁰ = 2021851987 is a prime.

It is a super-2 number, since 2×2021853011² = 8175779196179532242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2021853017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010926505 + 1010926506.

It is an arithmetic number, because the mean of its divisors is an integer number (1010926506).

Almost surely, 2^2021853011 is an apocalyptic number.

2021853011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021853011 is an equidigital number, since it uses as much as digits as its factorization.

2021853011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2021853011 is about 44965.0198598866. The cubic root of 2021853011 is about 1264.4932820310.

Subtracting from 2021853011 its reverse (1103581202), we obtain a square (918271809 = 30303²).

The spelling of 2021853011 in words is "two billion, twenty-one million, eight hundred fifty-three thousand, eleven".