220121230003 has 4 divisors (see below), whose sum is σ = 229691718288. Its totient is φ = 210550741720.

The previous prime is 220121229971. The next prime is 220121230027. The reversal of 220121230003 is 300032121022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220121230003 - 2⁵ = 220121229971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220121231003) 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, 4785244108 + ... + 4785244153.

It is an arithmetic number, because the mean of its divisors is an integer number (57422929572).

Almost surely, 2^220121230003 is an apocalyptic number.

220121230003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

220121230003 is a deficient number, since it is larger than the sum of its proper divisors (9570488285).

220121230003 is an equidigital number, since it uses as much as digits as its factorization.

220121230003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9570488284.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 220121230003 its reverse (300032121022), we get a palindrome (520153351025).

The spelling of 220121230003 in words is "two hundred twenty billion, one hundred twenty-one million, two hundred thirty thousand, three".