101323220 has 12 divisors (see below), whose sum is σ = 212778804. Its totient is φ = 40529280.

The previous prime is 101323217. The next prime is 101323223. The reversal of 101323220 is 22323101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (101323217) and next prime (101323223).

It can be written as a sum of positive squares in 2 ways, for example, as 74407876 + 26915344 = 8626^2 + 5188^2 .

It is a super-2 number, since 2×101323220² = 20532789822336800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101323195 and 101323204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101323223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2533061 + ... + 2533100.

It is an arithmetic number, because the mean of its divisors is an integer number (17731567).

Almost surely, 2^101323220 is an apocalyptic number.

101323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101323220 is an abundant number, since it is smaller than the sum of its proper divisors (111455584).

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

101323220 is a wasteful number, since it uses less digits than its factorization.

101323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5066170 (or 5066168 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 101323220 is about 10065.9435722639. The cubic root of 101323220 is about 466.1972002109.

Adding to 101323220 its reverse (22323101), we get a palindrome (123646321).

The spelling of 101323220 in words is "one hundred one million, three hundred twenty-three thousand, two hundred twenty".