212002002121001 has 4 divisors (see below), whose sum is σ = 221219480474112. Its totient is φ = 202784523767892.

The previous prime is 212002002120991. The next prime is 212002002121037. The reversal of 212002002121001 is 100121200200212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212002002121001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212002002126001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4608739176521 + ... + 4608739176566.

It is an arithmetic number, because the mean of its divisors is an integer number (55304870118528).

Almost surely, 2^{212002002121001} is an apocalyptic number.

It is an amenable number.

212002002121001 is a deficient number, since it is larger than the sum of its proper divisors (9217478353111).

212002002121001 is an equidigital number, since it uses as much as digits as its factorization.

212002002121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9217478353110.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212002002121001 its reverse (100121200200212), we get a palindrome (312123202321213).

It can be divided in two parts, 21200200212 and 1001, that multiplied together give a palindrome (21221400412212).

The spelling of 212002002121001 in words is "two hundred twelve trillion, two billion, two million, one hundred twenty-one thousand, one".