20100211011 has 12 divisors (see below), whose sum is σ = 29383442088. Its totient is φ = 13238692704.

The previous prime is 20100210997. The next prime is 20100211031. The reversal of 20100211011 is 11011200102.

It is a happy number.

It is not a de Polignac number, because 20100211011 - 2⁶ = 20100210947 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 = 20100210984 and 20100211002.

It is not an unprimeable number, because it can be changed into a prime (20100211031) 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, 13453210 + ... + 13454703.

It is an arithmetic number, because the mean of its divisors is an integer number (2448620174).

Almost surely, 2^20100211011 is an apocalyptic number.

20100211011 is a deficient number, since it is larger than the sum of its proper divisors (9283231077).

20100211011 is a wasteful number, since it uses less digits than its factorization.

20100211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26908002 (or 26907999 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20100211011 its reverse (11011200102), we get a palindrome (31111411113).

The spelling of 20100211011 in words is "twenty billion, one hundred million, two hundred eleven thousand, eleven".