20111101010 has 128 divisors (see below), whose sum is σ = 48777168384. Its totient is φ = 5765621760.

The previous prime is 20111101009. The next prime is 20111101051. The reversal of 20111101010 is 1010111102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2929502 + ... + 2936358.

It is an arithmetic number, because the mean of its divisors is an integer number (381071628).

Almost surely, 2^20111101010 is an apocalyptic number.

20111101010 is an abundant number, since it is smaller than the sum of its proper divisors (28666067374).

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

20111101010 is a wasteful number, since it uses less digits than its factorization.

20111101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7188.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 20111101010 its reverse (1010111102), we get a palindrome (21121212112).

It can be divided in two parts, 20111 and 101010, that added together give a palindrome (121121).

The spelling of 20111101010 in words is "twenty billion, one hundred eleven million, one hundred one thousand, ten".