10001212001 has 16 divisors (see below), whose sum is σ = 11598379200. Its totient is φ = 8528184000.

The previous prime is 10001211973. The next prime is 10001212057. The reversal of 10001212001 is 10021210001.

It is a cyclic number.

It is not a de Polignac number, because 10001212001 - 2¹⁰ = 10001210977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10001212001.

It is not an unprimeable number, because it can be changed into a prime (10001212301) 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, 215786 + ... + 258003.

It is an arithmetic number, because the mean of its divisors is an integer number (724898700).

Almost surely, 2^10001212001 is an apocalyptic number.

10001212001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10001212001 is a deficient number, since it is larger than the sum of its proper divisors (1597167199).

10001212001 is a wasteful number, since it uses less digits than its factorization.

10001212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473920.

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

Adding to 10001212001 its reverse (10021210001), we get a palindrome (20022422002).

The spelling of 10001212001 in words is "ten billion, one million, two hundred twelve thousand, one".