222220203121 has 4 divisors (see below), whose sum is σ = 253965946432. Its totient is φ = 190474459812.

The previous prime is 222220203071. The next prime is 222220203137. The reversal of 222220203121 is 121302022222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121302022222 = 2 ⋅60651011111.

It is a de Polignac number, because none of the positive numbers 2^k-222220203121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222220203221) 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, 15872871645 + ... + 15872871658.

It is an arithmetic number, because the mean of its divisors is an integer number (63491486608).

Almost surely, 2^222220203121 is an apocalyptic number.

It is an amenable number.

222220203121 is a deficient number, since it is larger than the sum of its proper divisors (31745743311).

222220203121 is an equidigital number, since it uses as much as digits as its factorization.

222220203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31745743310.

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

Adding to 222220203121 its reverse (121302022222), we get a palindrome (343522225343).

The spelling of 222220203121 in words is "two hundred twenty-two billion, two hundred twenty million, two hundred three thousand, one hundred twenty-one".