1121254013 has 4 divisors (see below), whose sum is σ = 1223186208. Its totient is φ = 1019321820.

The previous prime is 1121254009. The next prime is 1121254027. The reversal of 1121254013 is 3104521211.

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.

It is not a de Polignac number, because 1121254013 - 2² = 1121254009 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 (1121254003) 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, 50966081 + ... + 50966102.

It is an arithmetic number, because the mean of its divisors is an integer number (305796552).

Almost surely, 2^1121254013 is an apocalyptic number.

It is an amenable number.

1121254013 is a deficient number, since it is larger than the sum of its proper divisors (101932195).

1121254013 is a wasteful number, since it uses less digits than its factorization.

1121254013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101932194.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1121254013 is about 33485.1312226785. The cubic root of 1121254013 is about 1038.8862624192.

Adding to 1121254013 its reverse (3104521211), we get a palindrome (4225775224).

The spelling of 1121254013 in words is "one billion, one hundred twenty-one million, two hundred fifty-four thousand, thirteen".