121138222 has 16 divisors (see below), whose sum is σ = 187976880. Its totient is φ = 58503168.

The previous prime is 121138219. The next prime is 121138247. The reversal of 121138222 is 222831121.

It is a junction number, because it is equal to n+sod(n) for n = 121138193 and 121138202.

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, 4398 + ... + 16174.

It is an arithmetic number, because the mean of its divisors is an integer number (11748555).

Almost surely, 2^121138222 is an apocalyptic number.

121138222 is a deficient number, since it is larger than the sum of its proper divisors (66838658).

121138222 is a wasteful number, since it uses less digits than its factorization.

121138222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11955.

The product of its digits is 384, while the sum is 22.

The square root of 121138222 is about 11006.2810249421. The cubic root of 121138222 is about 494.7970082209.

Adding to 121138222 its reverse (222831121), we get a palindrome (343969343).

The spelling of 121138222 in words is "one hundred twenty-one million, one hundred thirty-eight thousand, two hundred twenty-two".