121111426 has 8 divisors (see below), whose sum is σ = 183334140. Its totient is φ = 60000048.

The previous prime is 121111421. The next prime is 121111427. The reversal of 121111426 is 624111121.

It can be written as a sum of positive squares in 2 ways, for example, as 117744201 + 3367225 = 10851^2 + 1835^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121111421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277561 + ... + 277996.

Almost surely, 2^121111426 is an apocalyptic number.

121111426 is a deficient number, since it is larger than the sum of its proper divisors (62222714).

121111426 is a wasteful number, since it uses less digits than its factorization.

121111426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555668.

The product of its digits is 96, while the sum is 19.

The square root of 121111426 is about 11005.0636527010. The cubic root of 121111426 is about 494.7605221910.

Adding to 121111426 its reverse (624111121), we get a palindrome (745222547).

The spelling of 121111426 in words is "one hundred twenty-one million, one hundred eleven thousand, four hundred twenty-six".