20011102002 has 48 divisors (see below), whose sum is σ = 45265147200. Its totient is φ = 6625575792.

The previous prime is 20011101983. The next prime is 20011102073. The reversal of 20011102002 is 20020111002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65758 + ... + 210585.

It is an arithmetic number, because the mean of its divisors is an integer number (943023900).

Almost surely, 2^20011102002 is an apocalyptic number.

20011102002 is an abundant number, since it is smaller than the sum of its proper divisors (25254045198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20011102002 is a wasteful number, since it uses less digits than its factorization.

20011102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276509 (or 276497 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20011102002 its reverse (20020111002), we get a palindrome (40031213004).

The spelling of 20011102002 in words is "twenty billion, eleven million, one hundred two thousand, two".