101111001012220 has 12 divisors (see below), whose sum is σ = 212333102125704. Its totient is φ = 40444400404880.

The previous prime is 101111001012179. The next prime is 101111001012247. The reversal of 101111001012220 is 22210100111101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 101111001012220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2527775025286 + ... + 2527775025325.

It is an arithmetic number, because the mean of its divisors is an integer number (17694425177142).

Almost surely, 2^{101111001012220} is an apocalyptic number.

101111001012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101111001012220 is an abundant number, since it is smaller than the sum of its proper divisors (111222101113484).

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

101111001012220 is a wasteful number, since it uses less digits than its factorization.

101111001012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055550050620 (or 5055550050618 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101111001012220 its reverse (22210100111101), we get a palindrome (123321101123321).

The spelling of 101111001012220 in words is "one hundred one trillion, one hundred eleven billion, one million, twelve thousand, two hundred twenty".