1121213310 has 64 divisors (see below), whose sum is σ = 3079752192. Its totient is φ = 255908736.

The previous prime is 1121213297. The next prime is 1121213311. The reversal of 1121213310 is 133121211.

It is a happy number.

It is a super-2 number, since 2×1121213310² = 2514238573042312200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121213310.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121213311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158877 + ... + 165783.

It is an arithmetic number, because the mean of its divisors is an integer number (48121128).

Almost surely, 2^1121213310 is an apocalyptic number.

1121213310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121213310 is an abundant number, since it is smaller than the sum of its proper divisors (1958538882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121213310 is a wasteful number, since it uses less digits than its factorization.

1121213310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7697.

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

The square root of 1121213310 is about 33484.5234399416. The cubic root of 1121213310 is about 1038.8736912865.

Adding to 1121213310 its reverse (133121211), we get a palindrome (1254334521).

The spelling of 1121213310 in words is "one billion, one hundred twenty-one million, two hundred thirteen thousand, three hundred ten".