1212285901 has 8 divisors (see below), whose sum is σ = 1225556640. Its totient is φ = 1199054448.

The previous prime is 1212285887. The next prime is 1212285917. The reversal of 1212285901 is 1095822121.

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

It is a cyclic number.

It is not a de Polignac number, because 1212285901 - 2⁷ = 1212285773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212285001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 54510 + ... + 73456.

It is an arithmetic number, because the mean of its divisors is an integer number (153194580).

Almost surely, 2^1212285901 is an apocalyptic number.

It is an amenable number.

1212285901 is a deficient number, since it is larger than the sum of its proper divisors (13270739).

1212285901 is a wasteful number, since it uses less digits than its factorization.

1212285901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19643.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 1212285901 is about 34817.8962747608. The cubic root of 1212285901 is about 1066.2728507898.

The spelling of 1212285901 in words is "one billion, two hundred twelve million, two hundred eighty-five thousand, nine hundred one".