20011100010 has 384 divisors, whose sum is σ = 60224871168. Its totient is φ = 4202496000.

The previous prime is 20011099981. The next prime is 20011100023. The reversal of 20011100010 is 1000111002.

It is a super-2 number, since 2×20011100010² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 83033490 + ... + 83033730.

It is an arithmetic number, because the mean of its divisors is an integer number (156835602).

Almost surely, 2^20011100010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20011100010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30112435584).

20011100010 is an abundant number, since it is smaller than the sum of its proper divisors (40213771158).

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

20011100010 is a wasteful number, since it uses less digits than its factorization.

20011100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 20011100010 its reverse (1000111002), we get a palindrome (21011211012).

It can be divided in two parts, 20011 and 100010, that added together give a palindrome (120021).

The spelling of 20011100010 in words is "twenty billion, eleven million, one hundred thousand, ten".