1121401166 has 8 divisors (see below), whose sum is σ = 1770633480. Its totient is φ = 531190008.

The previous prime is 1121401121. The next prime is 1121401181. The reversal of 1121401166 is 6611041211.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14755241 + ... + 14755316.

It is an arithmetic number, because the mean of its divisors is an integer number (221329185).

Almost surely, 2^1121401166 is an apocalyptic number.

1121401166 is a deficient number, since it is larger than the sum of its proper divisors (649232314).

1121401166 is a wasteful number, since it uses less digits than its factorization.

1121401166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29510578.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1121401166 is about 33487.3284392768. The cubic root of 1121401166 is about 1038.9317081259.

Adding to 1121401166 its reverse (6611041211), we get a palindrome (7732442377).

The spelling of 1121401166 in words is "one billion, one hundred twenty-one million, four hundred one thousand, one hundred sixty-six".