1121213297 has 2 divisors, whose sum is σ = 1121213298. Its totient is φ = 1121213296.

The previous prime is 1121213293. The next prime is 1121213311. The reversal of 1121213297 is 7923121211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 988410721 + 132802576 = 31439^2 + 11524^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121213297 - 2² = 1121213293 is a prime.

It is a super-2 number, since 2×1121213297² = 2514238514739220418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121213293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560606648 + 560606649.

It is an arithmetic number, because the mean of its divisors is an integer number (560606649).

Almost surely, 2^1121213297 is an apocalyptic number.

It is an amenable number.

1121213297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121213297 is an equidigital number, since it uses as much as digits as its factorization.

1121213297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 29.

The square root of 1121213297 is about 33484.5232458221. The cubic root of 1121213297 is about 1038.8736872714.

The spelling of 1121213297 in words is "one billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred ninety-seven".