101223232020 has 72 divisors (see below), whose sum is σ = 307070978760. Its totient is φ = 26990472960.

The previous prime is 101223232007. The next prime is 101223232027. The reversal of 101223232020 is 20232322101.

101223232020 is a `hidden beast` number, since 101 + 223 + 2 + 320 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 38605176324 + 62618055696 = 196482^2 + 250236^2 .

It is a super-2 number, since 2×101223232020² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 101223231984 and 101223232002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101223232027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3105166 + ... + 3137594.

It is an arithmetic number, because the mean of its divisors is an integer number (4264874705).

Almost surely, 2^101223232020 is an apocalyptic number.

101223232020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101223232020 is an abundant number, since it is smaller than the sum of its proper divisors (205847746740).

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

101223232020 is a wasteful number, since it uses less digits than its factorization.

101223232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49785 (or 49780 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 101223232020 its reverse (20232322101), we get a palindrome (121455554121).

The spelling of 101223232020 in words is "one hundred one billion, two hundred twenty-three million, two hundred thirty-two thousand, twenty".