101011100220 has 96 divisors (see below), whose sum is σ = 318136607040. Its totient is φ = 26936281728.

The previous prime is 101011100213. The next prime is 101011100227. The reversal of 101011100220 is 22001110101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (101011100213) and next prime (101011100227).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101011100227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1110937 + ... + 1198416.

It is an arithmetic number, because the mean of its divisors is an integer number (3313922990).

Almost surely, 2^101011100220 is an apocalyptic number.

101011100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101011100220 is an abundant number, since it is smaller than the sum of its proper divisors (217125506820).

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

101011100220 is an equidigital number, since it uses as much as digits as its factorization.

101011100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309383 (or 2309363 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101011100220 its reverse (22001110101), we get a palindrome (123012210321).

The spelling of 101011100220 in words is "one hundred one billion, eleven million, one hundred thousand, two hundred twenty".