212100021002001 has 16 divisors (see below), whose sum is σ = 314330048280000. Its totient is φ = 126120081097920.

The previous prime is 212100021001987. The next prime is 212100021002027. The reversal of 212100021002001 is 100200120001212.

It is not a de Polignac number, because 212100021002001 - 2¹⁵ = 212100020969233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212100021002801) 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, 60634652626 + ... + 60634656123.

It is an arithmetic number, because the mean of its divisors is an integer number (19645628017500).

Almost surely, 2^{212100021002001} is an apocalyptic number.

It is an amenable number.

212100021002001 is a deficient number, since it is larger than the sum of its proper divisors (102230027277999).

212100021002001 is a wasteful number, since it uses less digits than its factorization.

212100021002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121269308816.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 212100021002001 its reverse (100200120001212), we get a palindrome (312300141003213).

The spelling of 212100021002001 in words is "two hundred twelve trillion, one hundred billion, twenty-one million, two thousand, one".