2021242025111 has 4 divisors (see below), whose sum is σ = 2021634275952. Its totient is φ = 2020849774272.

The previous prime is 2021242025083. The next prime is 2021242025167. The reversal of 2021242025111 is 1115202421202.

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 2021242025111 - 2³⁸ = 1746364118167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021242025171) 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, 196117691 + ... + 196127996.

It is an arithmetic number, because the mean of its divisors is an integer number (505408568988).

Almost surely, 2^{2021242025111} is an apocalyptic number.

2021242025111 is a deficient number, since it is larger than the sum of its proper divisors (392250841).

2021242025111 is an equidigital number, since it uses as much as digits as its factorization.

2021242025111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392250840.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 2021242025111 its reverse (1115202421202), we get a palindrome (3136444446313).

The spelling of 2021242025111 in words is "two trillion, twenty-one billion, two hundred forty-two million, twenty-five thousand, one hundred eleven".