1249212001 has 8 divisors (see below), whose sum is σ = 1265007744. Its totient is φ = 1233434160.

The previous prime is 1249211959. The next prime is 1249212011. The reversal of 1249212001 is 1002129421.

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 1249212001 - 2¹¹ = 1249209953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1249212011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186531 + ... + 193111.

It is an arithmetic number, because the mean of its divisors is an integer number (158125968).

Almost surely, 2^1249212001 is an apocalyptic number.

It is an amenable number.

1249212001 is a deficient number, since it is larger than the sum of its proper divisors (15795743).

1249212001 is an equidigital number, since it uses as much as digits as its factorization.

1249212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8951.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1249212001 is about 35344.1933137538. The cubic root of 1249212001 is about 1076.9909384496.

The spelling of 1249212001 in words is "one billion, two hundred forty-nine million, two hundred twelve thousand, one".