222202011121 has 4 divisors (see below), whose sum is σ = 223046885952. Its totient is φ = 221357136292.

The previous prime is 222202011113. The next prime is 222202011173. The reversal of 222202011121 is 121110202222.

It is a happy number.

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: 121110202222 = 2 ⋅60555101111.

It is a cyclic number.

It is not a de Polignac number, because 222202011121 - 2³ = 222202011113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222202011095 and 222202011104.

It is not an unprimeable number, because it can be changed into a prime (222202011221) 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, 422437021 + ... + 422437546.

It is an arithmetic number, because the mean of its divisors is an integer number (55761721488).

Almost surely, 2^222202011121 is an apocalyptic number.

It is an amenable number.

222202011121 is a deficient number, since it is larger than the sum of its proper divisors (844874831).

222202011121 is an equidigital number, since it uses as much as digits as its factorization.

222202011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844874830.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222202011121 its reverse (121110202222), we get a palindrome (343312213343).

The spelling of 222202011121 in words is "two hundred twenty-two billion, two hundred two million, eleven thousand, one hundred twenty-one".