1213004001 has 8 divisors (see below), whose sum is σ = 1764369504. Its totient is φ = 735153920.

The previous prime is 1213003997. The next prime is 1213004003. The reversal of 1213004001 is 1004003121.

It is a happy number.

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 1213004001 - 2² = 1213003997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213004003) 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, 18378816 + ... + 18378881.

It is an arithmetic number, because the mean of its divisors is an integer number (220546188).

Almost surely, 2^1213004001 is an apocalyptic number.

1213004001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1213004001 is a deficient number, since it is larger than the sum of its proper divisors (551365503).

1213004001 is a wasteful number, since it uses less digits than its factorization.

1213004001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36757711.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1213004001 is about 34828.2069736586. The cubic root of 1213004001 is about 1066.4833455247.

Adding to 1213004001 its reverse (1004003121), we get a palindrome (2217007122).

The spelling of 1213004001 in words is "one billion, two hundred thirteen million, four thousand, one".