1912210001 has 16 divisors (see below), whose sum is σ = 2106457920. Its totient is φ = 1725049920.

The previous prime is 1912209991. The next prime is 1912210007. The reversal of 1912210001 is 1000122191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1912210001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1912210007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125486 + ... + 139896.

It is an arithmetic number, because the mean of its divisors is an integer number (131653620).

Almost surely, 2^1912210001 is an apocalyptic number.

It is an amenable number.

1912210001 is a deficient number, since it is larger than the sum of its proper divisors (194247919).

1912210001 is a wasteful number, since it uses less digits than its factorization.

1912210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14656.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 1912210001 is about 43728.8234577607. The cubic root of 1912210001 is about 1241.2097976498.

Adding to 1912210001 its reverse (1000122191), we get a palindrome (2912332192).

The spelling of 1912210001 in words is "one billion, nine hundred twelve million, two hundred ten thousand, one".