20021220201099 has 16 divisors (see below), whose sum is σ = 28789429372704. Its totient is φ = 12303174912000.

The previous prime is 20021220201071. The next prime is 20021220201119. The reversal of 20021220201099 is 99010202212002.

It is not a de Polignac number, because 20021220201099 - 2²⁵ = 20021186646667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021220203099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366138582 + ... + 366193259.

It is an arithmetic number, because the mean of its divisors is an integer number (1799339335794).

Almost surely, 2^{20021220201099} is an apocalyptic number.

20021220201099 is a deficient number, since it is larger than the sum of its proper divisors (8768209171605).

20021220201099 is a wasteful number, since it uses less digits than its factorization.

20021220201099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732332558.

The product of its (nonzero) digits is 2592, while the sum is 30.

The spelling of 20021220201099 in words is "twenty trillion, twenty-one billion, two hundred twenty million, two hundred one thousand, ninety-nine".