2110021011 has 48 divisors (see below), whose sum is σ = 3696136704. Its totient is φ = 1132330752.

The previous prime is 2110020967. The next prime is 2110021013. The reversal of 2110021011 is 1101200112.

It is a happy number.

It is not a de Polignac number, because 2110021011 - 2⁹ = 2110020499 is a prime.

It is a super-2 number, since 2×2110021011² = 8904377333722924242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2110020984 and 2110021002.

It is not an unprimeable number, because it can be changed into a prime (2110021013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 558250 + ... + 562016.

It is an arithmetic number, because the mean of its divisors is an integer number (77002848).

Almost surely, 2^2110021011 is an apocalyptic number.

2110021011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2110021011 is a deficient number, since it is larger than the sum of its proper divisors (1586115693).

2110021011 is a wasteful number, since it uses less digits than its factorization.

2110021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320 (or 4317 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 2110021011 is about 45934.9650157698. The cubic root of 2110021011 is about 1282.6128696988.

Adding to 2110021011 its reverse (1101200112), we get a palindrome (3211221123).

The spelling of 2110021011 in words is "two billion, one hundred ten million, twenty-one thousand, eleven".