20101210002001 has 32 divisors (see below), whose sum is σ = 20638211616000. Its totient is φ = 19572613939200.

The previous prime is 20101210001969. The next prime is 20101210002023. The reversal of 20101210002001 is 10020001210102.

It is a cyclic number.

It is not a de Polignac number, because 20101210002001 - 2⁵ = 20101210001969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101210002101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4485873681 + ... + 4485878161.

It is an arithmetic number, because the mean of its divisors is an integer number (644944113000).

Almost surely, 2^{20101210002001} is an apocalyptic number.

It is an amenable number.

20101210002001 is a deficient number, since it is larger than the sum of its proper divisors (537001613999).

20101210002001 is a wasteful number, since it uses less digits than its factorization.

20101210002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6537.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20101210002001 its reverse (10020001210102), we get a palindrome (30121211212103).

The spelling of 20101210002001 in words is "twenty trillion, one hundred one billion, two hundred ten million, two thousand, one".