20021222101099 has 8 divisors (see below), whose sum is σ = 20667865439232. Its totient is φ = 19374628604520.

The previous prime is 20021222100961. The next prime is 20021222101171. The reversal of 20021222101099 is 99010122212002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021222101099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20021222101099.

It is not an unprimeable number, because it can be changed into a prime (20021222104099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11643169 + ... + 13251634.

It is an arithmetic number, because the mean of its divisors is an integer number (2583483179904).

Almost surely, 2^{20021222101099} is an apocalyptic number.

20021222101099 is a deficient number, since it is larger than the sum of its proper divisors (646643338133).

20021222101099 is a wasteful number, since it uses less digits than its factorization.

20021222101099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24920777.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 20021222101099 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, one hundred one thousand, ninety-nine".