2021222120099 has 32 divisors (see below), whose sum is σ = 2621518470144. Its totient is φ = 1514532412800.

The previous prime is 2021222120089. The next prime is 2021222120111. The reversal of 2021222120099 is 9900212221202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2021222120099 - 2⁴ = 2021222120083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021222120089) 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, 4569329 + ... + 4992114.

It is an arithmetic number, because the mean of its divisors is an integer number (81922452192).

Almost surely, 2^{2021222120099} is an apocalyptic number.

2021222120099 is a deficient number, since it is larger than the sum of its proper divisors (600296350045).

2021222120099 is a wasteful number, since it uses less digits than its factorization.

2021222120099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9561587.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 2021222120099 in words is "two trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty thousand, ninety-nine".