1121877253 has 4 divisors (see below), whose sum is σ = 1282145440. Its totient is φ = 961609068.

The previous prime is 1121877227. The next prime is 1121877293. The reversal of 1121877253 is 3527781211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3527781211 = 383 ⋅9210917.

It is not a de Polignac number, because 1121877253 - 2¹³ = 1121869061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121877223) 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, 80134083 + ... + 80134096.

It is an arithmetic number, because the mean of its divisors is an integer number (320536360).

Almost surely, 2^1121877253 is an apocalyptic number.

It is an amenable number.

1121877253 is a deficient number, since it is larger than the sum of its proper divisors (160268187).

1121877253 is an equidigital number, since it uses as much as digits as its factorization.

1121877253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160268186.

The product of its digits is 23520, while the sum is 37.

The square root of 1121877253 is about 33494.4361499041. The cubic root of 1121877253 is about 1039.0787122831.

The spelling of 1121877253 in words is "one billion, one hundred twenty-one million, eight hundred seventy-seven thousand, two hundred fifty-three".