20002102011 has 12 divisors (see below), whose sum is σ = 29961996792. Its totient is φ = 13334734512.

The previous prime is 20002101997. The next prime is 20002102067. The reversal of 20002102011 is 11020120002.

It is not a de Polignac number, because 20002102011 - 2⁵ = 20002101979 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 20002101984 and 20002102002.

It is not an unprimeable number, because it can be changed into a prime (20002102511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41156346 + ... + 41156831.

It is an arithmetic number, because the mean of its divisors is an integer number (2496833066).

Almost surely, 2^20002102011 is an apocalyptic number.

20002102011 is a deficient number, since it is larger than the sum of its proper divisors (9959894781).

20002102011 is an frugal number, since it uses more digits than its factorization.

20002102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82313192 (or 82313180 counting only the distinct ones).

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

Adding to 20002102011 its reverse (11020120002), we get a palindrome (31022222013).

The spelling of 20002102011 in words is "twenty billion, two million, one hundred two thousand, eleven".