100021031223 has 4 divisors (see below), whose sum is σ = 133361374968. Its totient is φ = 66680687480.

The previous prime is 100021031221. The next prime is 100021031267. The reversal of 100021031223 is 322130120001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322130120001 = 3 ⋅107376706667.

It is a cyclic number.

It is not a de Polignac number, because 100021031223 - 2¹ = 100021031221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021031221) 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, 16670171868 + ... + 16670171873.

It is an arithmetic number, because the mean of its divisors is an integer number (33340343742).

Almost surely, 2^100021031223 is an apocalyptic number.

100021031223 is a deficient number, since it is larger than the sum of its proper divisors (33340343745).

100021031223 is an equidigital number, since it uses as much as digits as its factorization.

100021031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33340343744.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 100021031223 its reverse (322130120001), we get a palindrome (422151151224).

The spelling of 100021031223 in words is "one hundred billion, twenty-one million, thirty-one thousand, two hundred twenty-three".