20100212011 has 12 divisors (see below), whose sum is σ = 22709708424. Its totient is φ = 17642811200.

The previous prime is 20100212009. The next prime is 20100212039. The reversal of 20100212011 is 11021200102.

It is not a de Polignac number, because 20100212011 - 2¹ = 20100212009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20100212051) 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, 1077130 + ... + 1095631.

It is an arithmetic number, because the mean of its divisors is an integer number (1892475702).

Almost surely, 2^20100212011 is an apocalyptic number.

20100212011 is a deficient number, since it is larger than the sum of its proper divisors (2609496413).

20100212011 is a wasteful number, since it uses less digits than its factorization.

20100212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172830 (or 2172801 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20100212011 its reverse (11021200102), we get a palindrome (31121412113).

The spelling of 20100212011 in words is "twenty billion, one hundred million, two hundred twelve thousand, eleven".