21012001010201 has 8 divisors (see below), whose sum is σ = 21034153574208. Its totient is φ = 20989857546000.

The previous prime is 21012001010183. The next prime is 21012001010233. The reversal of 21012001010201 is 10201010021012.

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 21012001010201 - 2⁶ = 21012001010137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21012001010251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2350556 + ... + 6895586.

It is an arithmetic number, because the mean of its divisors is an integer number (2629269196776).

Almost surely, 2^{21012001010201} is an apocalyptic number.

It is an amenable number.

21012001010201 is a deficient number, since it is larger than the sum of its proper divisors (22152564007).

21012001010201 is a wasteful number, since it uses less digits than its factorization.

21012001010201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549903.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21012001010201 its reverse (10201010021012), we get a palindrome (31213011031213).

The spelling of 21012001010201 in words is "twenty-one trillion, twelve billion, one million, ten thousand, two hundred one".