11311221110 has 32 divisors (see below), whose sum is σ = 23287461120. Its totient is φ = 3875022432.

The previous prime is 11311221109. The next prime is 11311221137. The reversal of 11311221110 is 1112211311.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23957 + ... + 152303.

It is an arithmetic number, because the mean of its divisors is an integer number (727733160).

Almost surely, 2^11311221110 is an apocalyptic number.

11311221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11311221110 is an abundant number, since it is smaller than the sum of its proper divisors (11976240010).

11311221110 is a wasteful number, since it uses less digits than its factorization.

11311221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129620.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11311221110 its reverse (1112211311), we get a palindrome (12423432421).

The spelling of 11311221110 in words is "eleven billion, three hundred eleven million, two hundred twenty-one thousand, one hundred ten".