121111100222 has 32 divisors (see below), whose sum is σ = 220971022272. Its totient is φ = 48598401024.

The previous prime is 121111100203. The next prime is 121111100251. The reversal of 121111100222 is 222001111121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 121111100197 and 121111100206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1272383 + ... + 1364250.

It is an arithmetic number, because the mean of its divisors is an integer number (6905344446).

Almost surely, 2^121111100222 is an apocalyptic number.

121111100222 is a deficient number, since it is larger than the sum of its proper divisors (99859922050).

121111100222 is a wasteful number, since it uses less digits than its factorization.

121111100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636852.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121111100222 its reverse (222001111121), we get a palindrome (343112211343).

The spelling of 121111100222 in words is "one hundred twenty-one billion, one hundred eleven million, one hundred thousand, two hundred twenty-two".