222121322003 has 4 divisors (see below), whose sum is σ = 253852939440. Its totient is φ = 190389704568.

The previous prime is 222121321991. The next prime is 222121322021. The reversal of 222121322003 is 300223121222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300223121222 = 2 ⋅150111560611.

It is not a de Polignac number, because 222121322003 - 2³⁴ = 204941452819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222121322903) 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, 15865808708 + ... + 15865808721.

It is an arithmetic number, because the mean of its divisors is an integer number (63463234860).

Almost surely, 2^222121322003 is an apocalyptic number.

222121322003 is a deficient number, since it is larger than the sum of its proper divisors (31731617437).

222121322003 is an equidigital number, since it uses as much as digits as its factorization.

222121322003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31731617436.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 222121322003 its reverse (300223121222), we get a palindrome (522344443225).

The spelling of 222121322003 in words is "two hundred twenty-two billion, one hundred twenty-one million, three hundred twenty-two thousand, three".