121102221222 has 24 divisors (see below), whose sum is σ = 269479718976. Its totient is φ = 39276395856.

The previous prime is 121102221217. The next prime is 121102221283. The reversal of 121102221222 is 222122201121.

It is a happy number.

121102221222 is a `hidden beast` number, since 121 + 102 + 221 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121102221195 and 121102221204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90916918 + ... + 90918249.

It is an arithmetic number, because the mean of its divisors is an integer number (11228321624).

Almost surely, 2^121102221222 is an apocalyptic number.

121102221222 is an abundant number, since it is smaller than the sum of its proper divisors (148377497754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121102221222 is a wasteful number, since it uses less digits than its factorization.

121102221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181835212 (or 181835209 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121102221222 its reverse (222122201121), we get a palindrome (343224422343).

The spelling of 121102221222 in words is "one hundred twenty-one billion, one hundred two million, two hundred twenty-one thousand, two hundred twenty-two".