121200122222 has 16 divisors (see below), whose sum is σ = 192241897344. Its totient is φ = 57214848000.

The previous prime is 121200122221. The next prime is 121200122249. The reversal of 121200122222 is 222221002121.

It is a happy number.

It is a super-6 number, since 6×121200122222⁶ (a number of 68 digits) contains 666666 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121200122222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200122221) 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, 23836979 + ... + 23842062.

It is an arithmetic number, because the mean of its divisors is an integer number (12015118584).

Almost surely, 2^121200122222 is an apocalyptic number.

121200122222 is a deficient number, since it is larger than the sum of its proper divisors (71041775122).

121200122222 is a wasteful number, since it uses less digits than its factorization.

121200122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47679115.

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

Adding to 121200122222 its reverse (222221002121), we get a palindrome (343421124343).

The spelling of 121200122222 in words is "one hundred twenty-one billion, two hundred million, one hundred twenty-two thousand, two hundred twenty-two".