20111221000110 has 32 divisors (see below), whose sum is σ = 48283477381152. Its totient is φ = 5361153713280.

The previous prime is 20111221000033. The next prime is 20111221000121. The reversal of 20111221000110 is 1100012211102.

It is a super-2 number, since 2×20111221000110² (a number of 27 digits) contains 22 as substring.

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, 114820621 + ... + 114995640.

It is an arithmetic number, because the mean of its divisors is an integer number (1508858668161).

Almost surely, 2^{20111221000110} is an apocalyptic number.

20111221000110 is an abundant number, since it is smaller than the sum of its proper divisors (28172256381042).

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

20111221000110 is a wasteful number, since it uses less digits than its factorization.

20111221000110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229819188.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20111221000110 its reverse (1100012211102), we get a palindrome (21211233211212).

The spelling of 20111221000110 in words is "twenty trillion, one hundred eleven billion, two hundred twenty-one million, one hundred ten", and thus it is an aban number.