222121220203 has 8 divisors (see below), whose sum is σ = 236081830400. Its totient is φ = 208387612008.

The previous prime is 222121220147. The next prime is 222121220221. The reversal of 222121220203 is 302022121222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222121220203 - 2¹⁷ = 222121089131 is a prime.

It is a super-2 number, since 2×222121220203² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222121220263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56748483 + ... + 56752396.

It is an arithmetic number, because the mean of its divisors is an integer number (29510228800).

Almost surely, 2^222121220203 is an apocalyptic number.

222121220203 is a deficient number, since it is larger than the sum of its proper divisors (13960610197).

222121220203 is a wasteful number, since it uses less digits than its factorization.

222121220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113501001.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 222121220203 its reverse (302022121222), we get a palindrome (524143341425).

The spelling of 222121220203 in words is "two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred three".