1121013213 has 16 divisors (see below), whose sum is σ = 1510272000. Its totient is φ = 739563696.

The previous prime is 1121013211. The next prime is 1121013217. The reversal of 1121013213 is 3123101211.

It is a happy number.

It is not a de Polignac number, because 1121013213 - 2¹ = 1121013211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121013192 and 1121013201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121013211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559788 + ... + 561786.

It is an arithmetic number, because the mean of its divisors is an integer number (94392000).

Almost surely, 2^1121013213 is an apocalyptic number.

It is an amenable number.

1121013213 is a deficient number, since it is larger than the sum of its proper divisors (389258787).

1121013213 is a wasteful number, since it uses less digits than its factorization.

1121013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1121013213 is about 33481.5354038610. The cubic root of 1121013213 is about 1038.8118868482.

Adding to 1121013213 its reverse (3123101211), we get a palindrome (4244114424).

The spelling of 1121013213 in words is "one billion, one hundred twenty-one million, thirteen thousand, two hundred thirteen".