101023220 has 24 divisors (see below), whose sum is σ = 213506664. Its totient is φ = 40150656.

The previous prime is 101023207. The next prime is 101023249. The reversal of 101023220 is 22320101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2696164 + 98327056 = 1642^2 + 9916^2 .

It is a congruent 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, 12947 + ... + 19226.

It is an arithmetic number, because the mean of its divisors is an integer number (8896111).

Almost surely, 2^101023220 is an apocalyptic number.

101023220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101023220 is an abundant number, since it is smaller than the sum of its proper divisors (112483444).

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

101023220 is a wasteful number, since it uses less digits than its factorization.

101023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32339 (or 32337 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 101023220 is about 10051.0307929088. The cubic root of 101023220 is about 465.7366364157.

Adding to 101023220 its reverse (22320101), we get a palindrome (123343321).

The spelling of 101023220 in words is "one hundred one million, twenty-three thousand, two hundred twenty".