101122220 has 24 divisors (see below), whose sum is σ = 214918704. Its totient is φ = 39960896.

The previous prime is 101122187. The next prime is 101122289. The reversal of 101122220 is 22221101.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28799 + ... + 32118.

It is an arithmetic number, because the mean of its divisors is an integer number (8954946).

Almost surely, 2^101122220 is an apocalyptic number.

101122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101122220 is an abundant number, since it is smaller than the sum of its proper divisors (113796484).

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

101122220 is a wasteful number, since it uses less digits than its factorization.

101122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61009 (or 61007 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 101122220 is about 10055.9544549486. The cubic root of 101122220 is about 465.8887231462. Note that the first 3 decimals are identical.

Adding to 101122220 its reverse (22221101), we get a palindrome (123343321).

The spelling of 101122220 in words is "one hundred one million, one hundred twenty-two thousand, two hundred twenty".