222101220121 has 8 divisors (see below), whose sum is σ = 243835504704. Its totient is φ = 200624146320.

The previous prime is 222101220113. The next prime is 222101220137. The reversal of 222101220121 is 121022101222.

It is a happy number.

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 222101220121 - 2³ = 222101220113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222101220095 and 222101220104.

It is not an unprimeable number, because it can be changed into a prime (222101220161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64300885 + ... + 64304338.

It is an arithmetic number, because the mean of its divisors is an integer number (30479438088).

Almost surely, 2^222101220121 is an apocalyptic number.

It is an amenable number.

222101220121 is a deficient number, since it is larger than the sum of its proper divisors (21734284583).

222101220121 is a wasteful number, since it uses less digits than its factorization.

222101220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128605391.

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

Adding to 222101220121 its reverse (121022101222), we get a palindrome (343123321343).

The spelling of 222101220121 in words is "two hundred twenty-two billion, one hundred one million, two hundred twenty thousand, one hundred twenty-one".