20002888111 has 4 divisors (see below), whose sum is σ = 20014889112. Its totient is φ = 19990887112.

The previous prime is 20002888067. The next prime is 20002888181. The reversal of 20002888111 is 11188820002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11188820002 = 2 ⋅5594410001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002888111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002888181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5998000 + ... + 6001333.

It is an arithmetic number, because the mean of its divisors is an integer number (5003722278).

Almost surely, 2^20002888111 is an apocalyptic number.

20002888111 is a deficient number, since it is larger than the sum of its proper divisors (12001001).

20002888111 is a wasteful number, since it uses less digits than its factorization.

20002888111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12001000.

The product of its (nonzero) digits is 2048, while the sum is 31.

The spelling of 20002888111 in words is "twenty billion, two million, eight hundred eighty-eight thousand, one hundred eleven".