2021222221099 has 32 divisors (see below), whose sum is σ = 2078939520000. Its totient is φ = 1964589849600.

The previous prime is 2021222221003. The next prime is 2021222221103. The reversal of 2021222221099 is 9901222221202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2021222221099 - 2³⁷ = 1883783267627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021222227099) 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, 1348379652 + ... + 1348381150.

It is an arithmetic number, because the mean of its divisors is an integer number (64966860000).

Almost surely, 2^{2021222221099} is an apocalyptic number.

2021222221099 is a deficient number, since it is larger than the sum of its proper divisors (57717298901).

2021222221099 is a wasteful number, since it uses less digits than its factorization.

2021222221099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 2021222221099 in words is "two trillion, twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, ninety-nine".