1121214905 has 8 divisors (see below), whose sum is σ = 1378274184. Its totient is φ = 875094400.

The previous prime is 1121214893. The next prime is 1121214931. The reversal of 1121214905 is 5094121211.

It can be written as a sum of positive squares in 4 ways, for example, as 24810361 + 1096404544 = 4981^2 + 33112^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121214905 - 2¹⁴ = 1121198521 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2734466 + ... + 2734875.

It is an arithmetic number, because the mean of its divisors is an integer number (172284273).

Almost surely, 2^1121214905 is an apocalyptic number.

It is an amenable number.

1121214905 is a deficient number, since it is larger than the sum of its proper divisors (257059279).

1121214905 is an equidigital number, since it uses as much as digits as its factorization.

1121214905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469387.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1121214905 is about 33484.5472569064. The cubic root of 1121214905 is about 1038.8741839084.

The spelling of 1121214905 in words is "one billion, one hundred twenty-one million, two hundred fourteen thousand, nine hundred five".