1212291245 has 16 divisors (see below), whose sum is σ = 1656001152. Its totient is φ = 843332160.

The previous prime is 1212291211. The next prime is 1212291253. The reversal of 1212291245 is 5421922121.

It is not a de Polignac number, because 1212291245 - 2¹⁰ = 1212290221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477902 + ... + 480431.

It is an arithmetic number, because the mean of its divisors is an integer number (103500072).

Almost surely, 2^1212291245 is an apocalyptic number.

It is an amenable number.

1212291245 is a deficient number, since it is larger than the sum of its proper divisors (443709907).

1212291245 is a wasteful number, since it uses less digits than its factorization.

1212291245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958372.

The product of its digits is 2880, while the sum is 29.

The square root of 1212291245 is about 34817.9730168199. The cubic root of 1212291245 is about 1066.2744175692.

The spelling of 1212291245 in words is "one billion, two hundred twelve million, two hundred ninety-one thousand, two hundred forty-five".