121210022222 has 16 divisors (see below), whose sum is σ = 183533759280. Its totient is φ = 60032223168.

The previous prime is 121210022201. The next prime is 121210022243. The reversal of 121210022222 is 222220012121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121210022201) and next prime (121210022243).

It is a self number, because there is not a number n which added to its sum of digits gives 121210022222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2470304 + ... + 2518892.

It is an arithmetic number, because the mean of its divisors is an integer number (11470859955).

Almost surely, 2^121210022222 is an apocalyptic number.

121210022222 is a deficient number, since it is larger than the sum of its proper divisors (62323737058).

121210022222 is a wasteful number, since it uses less digits than its factorization.

121210022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60355.

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

Adding to 121210022222 its reverse (222220012121), we get a palindrome (343430034343).

The spelling of 121210022222 in words is "one hundred twenty-one billion, two hundred ten million, twenty-two thousand, two hundred twenty-two".