1121611051 has 4 divisors (see below), whose sum is σ = 1223575704. Its totient is φ = 1019646400.

The previous prime is 1121611037. The next prime is 1121611079. The reversal of 1121611051 is 1501161211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121611051 - 2⁷ = 1121610923 is a prime.

It is a super-2 number, since 2×1121611051² = 2516022699450649202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121011051) 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, 50982310 + ... + 50982331.

It is an arithmetic number, because the mean of its divisors is an integer number (305893926).

Almost surely, 2^1121611051 is an apocalyptic number.

1121611051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1121611051 is a deficient number, since it is larger than the sum of its proper divisors (101964653).

1121611051 is a wasteful number, since it uses less digits than its factorization.

1121611051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101964652.

The product of its (nonzero) digits is 60, while the sum is 19.

The square root of 1121611051 is about 33490.4620899742. The cubic root of 1121611051 is about 1038.9965206674.

Adding to 1121611051 its reverse (1501161211), we get a palindrome (2622772262).

The spelling of 1121611051 in words is "one billion, one hundred twenty-one million, six hundred eleven thousand, fifty-one".