1121037451 has 4 divisors (see below), whose sum is σ = 1121262912. Its totient is φ = 1120811992.

The previous prime is 1121037431. The next prime is 1121037461. The reversal of 1121037451 is 1547301211.

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 1121037451 - 2⁵ = 1121037419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121037431) 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, 105100 + ... + 115273.

It is an arithmetic number, because the mean of its divisors is an integer number (280315728).

Almost surely, 2^1121037451 is an apocalyptic number.

1121037451 is a deficient number, since it is larger than the sum of its proper divisors (225461).

1121037451 is an equidigital number, since it uses as much as digits as its factorization.

1121037451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225460.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1121037451 is about 33481.8973626048. The cubic root of 1121037451 is about 1038.8193736886.

Adding to 1121037451 its reverse (1547301211), we get a palindrome (2668338662).

The spelling of 1121037451 in words is "one billion, one hundred twenty-one million, thirty-seven thousand, four hundred fifty-one".