2102020511 has 2 divisors, whose sum is σ = 2102020512. Its totient is φ = 2102020510.

The previous prime is 2102020507. The next prime is 2102020517. The reversal of 2102020511 is 1150202012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102020511 - 2² = 2102020507 is a prime.

It is a super-2 number, since 2×2102020511² = 8836980457329402242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102020517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051010255 + 1051010256.

It is an arithmetic number, because the mean of its divisors is an integer number (1051010256).

Almost surely, 2^2102020511 is an apocalyptic number.

2102020511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102020511 is an equidigital number, since it uses as much as digits as its factorization.

2102020511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 2102020511 is about 45847.7972317101. The cubic root of 2102020511 is about 1280.9897356072.

Adding to 2102020511 its reverse (1150202012), we get a palindrome (3252222523).

The spelling of 2102020511 in words is "two billion, one hundred two million, twenty thousand, five hundred eleven".