2021010122011 has 4 divisors (see below), whose sum is σ = 2043718101000. Its totient is φ = 1998302143024.

The previous prime is 2021010121997. The next prime is 2021010122023. The reversal of 2021010122011 is 1102210101202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021010122011 - 2²¹ = 2021008024859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021010121982 and 2021010122000.

It is not an unprimeable number, because it can be changed into a prime (2021010122081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11353989361 + ... + 11353989538.

It is an arithmetic number, because the mean of its divisors is an integer number (510929525250).

Almost surely, 2^{2021010122011} is an apocalyptic number.

2021010122011 is a deficient number, since it is larger than the sum of its proper divisors (22707978989).

2021010122011 is an equidigital number, since it uses as much as digits as its factorization.

2021010122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22707978988.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2021010122011 its reverse (1102210101202), we get a palindrome (3123220223213).

The spelling of 2021010122011 in words is "two trillion, twenty-one billion, ten million, one hundred twenty-two thousand, eleven".