100021231224 has 24 divisors (see below), whose sum is σ = 270890834760. Its totient is φ = 33340410384.

The previous prime is 100021231223. The next prime is 100021231267. The reversal of 100021231224 is 422132120001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

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 = 100021231197 and 100021231206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021231223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 694591812 + ... + 694591955.

It is an arithmetic number, because the mean of its divisors is an integer number (11287118115).

Almost surely, 2^100021231224 is an apocalyptic number.

It is an amenable number.

100021231224 is an abundant number, since it is smaller than the sum of its proper divisors (170869603536).

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

100021231224 is a wasteful number, since it uses less digits than its factorization.

100021231224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389183779 (or 1389183772 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 100021231224 its reverse (422132120001), we get a palindrome (522153351225).

The spelling of 100021231224 in words is "one hundred billion, twenty-one million, two hundred thirty-one thousand, two hundred twenty-four".