121123211222 has 16 divisors (see below), whose sum is σ = 201972204672. Its totient is φ = 54099696960.

The previous prime is 121123211213. The next prime is 121123211239. The reversal of 121123211222 is 222112321121.

It is a junction number, because it is equal to n+sod(n) for n = 121123211194 and 121123211203.

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, 75137663 + ... + 75139274.

It is an arithmetic number, because the mean of its divisors is an integer number (12623262792).

Almost surely, 2^121123211222 is an apocalyptic number.

121123211222 is a deficient number, since it is larger than the sum of its proper divisors (80848993450).

121123211222 is a wasteful number, since it uses less digits than its factorization.

121123211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150276983.

The product of its digits is 192, while the sum is 20.

Adding to 121123211222 its reverse (222112321121), we get a palindrome (343235532343).

The spelling of 121123211222 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred eleven thousand, two hundred twenty-two".