20002221001111 has 8 divisors (see below), whose sum is σ = 21591602880480. Its totient is φ = 18472815796512.

The previous prime is 20002221001073. The next prime is 20002221001153. The reversal of 20002221001111 is 11110012220002.

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

It is a cyclic number.

It is not a de Polignac number, because 20002221001111 - 2²¹ = 20002218903959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002221001091 and 20002221001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002221001181) 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, 14994168000 + ... + 14994169333.

It is an arithmetic number, because the mean of its divisors is an integer number (2698950360060).

Almost surely, 2^{20002221001111} is an apocalyptic number.

20002221001111 is a deficient number, since it is larger than the sum of its proper divisors (1589381879369).

20002221001111 is a wasteful number, since it uses less digits than its factorization.

20002221001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29988337385.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20002221001111 its reverse (11110012220002), we get a palindrome (31112233221113).

The spelling of 20002221001111 in words is "twenty trillion, two billion, two hundred twenty-one million, one thousand, one hundred eleven".