2022121120021 has 4 divisors (see below), whose sum is σ = 2022201480544. Its totient is φ = 2022040759500.

The previous prime is 2022121119919. The next prime is 2022121120027. The reversal of 2022121120021 is 1200211212202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2022121120021 - 2⁹ = 2022121119509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2022121119977 and 2022121120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022121120027) 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, 40142505 + ... + 40192846.

It is an arithmetic number, because the mean of its divisors is an integer number (505550370136).

Almost surely, 2^{2022121120021} is an apocalyptic number.

It is an amenable number.

2022121120021 is a deficient number, since it is larger than the sum of its proper divisors (80360523).

2022121120021 is an equidigital number, since it uses as much as digits as its factorization.

2022121120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80360522.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2022121120021 its reverse (1200211212202), we get a palindrome (3222332332223).

The spelling of 2022121120021 in words is "two trillion, twenty-two billion, one hundred twenty-one million, one hundred twenty thousand, twenty-one".