121222100222 has 8 divisors (see below), whose sum is σ = 191403316200. Its totient is φ = 57420994824.

The previous prime is 121222100221. The next prime is 121222100249. The reversal of 121222100222 is 222001222121.

It is a happy number.

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

It is a super-2 number, since 2×121222100222² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121222100222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222100221) 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, 1595027597 + ... + 1595027672.

It is an arithmetic number, because the mean of its divisors is an integer number (23925414525).

Almost surely, 2^121222100222 is an apocalyptic number.

121222100222 is a deficient number, since it is larger than the sum of its proper divisors (70181215978).

121222100222 is a wasteful number, since it uses less digits than its factorization.

121222100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190055290.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121222100222 its reverse (222001222121), we get a palindrome (343223322343).

The spelling of 121222100222 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred thousand, two hundred twenty-two".