2021020023011 has 32 divisors (see below), whose sum is σ = 2232641138688. Its totient is φ = 1814180515840.

The previous prime is 2021020022977. The next prime is 2021020023049. The reversal of 2021020023011 is 1103200201202.

It is a happy number.

It is not a de Polignac number, because 2021020023011 - 2¹⁰ = 2021020021987 is a prime.

It is a super-2 number, since 2×2021020023011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021020023811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 915730670 + ... + 915732876.

It is an arithmetic number, because the mean of its divisors is an integer number (69770035584).

Almost surely, 2^{2021020023011} is an apocalyptic number.

2021020023011 is a deficient number, since it is larger than the sum of its proper divisors (211621115677).

2021020023011 is a wasteful number, since it uses less digits than its factorization.

2021020023011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4771.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2021020023011 its reverse (1103200201202), we get a palindrome (3124220224213).

The spelling of 2021020023011 in words is "two trillion, twenty-one billion, twenty million, twenty-three thousand, eleven".