1210001000001 has 16 divisors (see below), whose sum is σ = 1614118683840. Its totient is φ = 806275434240.

The previous prime is 1210000999997. The next prime is 1210001000009. The reversal of 1210001000001 is 1000001000121.

It is not a de Polignac number, because 1210001000001 - 2² = 1210000999997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1210001000009) 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, 69201406 + ... + 69218888.

It is an arithmetic number, because the mean of its divisors is an integer number (100882417740).

Almost surely, 2^{1210001000001} is an apocalyptic number.

It is an amenable number.

1210001000001 is a deficient number, since it is larger than the sum of its proper divisors (404117683839).

1210001000001 is a wasteful number, since it uses less digits than its factorization.

1210001000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27376.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 1210001000001 its reverse (1000001000121), we get a palindrome (2210002000122).

The spelling of 1210001000001 in words is "one trillion, two hundred ten billion, one million, one", and thus it is an aban number.