1210012001 has 8 divisors (see below), whose sum is σ = 1320331104. Its totient is φ = 1099745920.

The previous prime is 1210011983. The next prime is 1210012003. The reversal of 1210012001 is 1002100121.

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 1210012001 - 2⁶ = 1210011937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1210012001.

It is not an unprimeable number, because it can be changed into a prime (1210012003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46010 + ... + 67356.

It is an arithmetic number, because the mean of its divisors is an integer number (165041388).

Almost surely, 2^1210012001 is an apocalyptic number.

1210012001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210012001 is a deficient number, since it is larger than the sum of its proper divisors (110319103).

1210012001 is a wasteful number, since it uses less digits than its factorization.

1210012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26511.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1210012001 is about 34785.2267636708. The cubic root of 1210012001 is about 1065.6057597005.

Adding to 1210012001 its reverse (1002100121), we get a palindrome (2212112122).

The spelling of 1210012001 in words is "one billion, two hundred ten million, twelve thousand, one".