212102002121001 has 4 divisors (see below), whose sum is σ = 282802669494672. Its totient is φ = 141401334747332.

The previous prime is 212102002120997. The next prime is 212102002121039. The reversal of 212102002121001 is 100121200201212.

212102002121001 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 212102002121001 - 2² = 212102002120997 is a prime.

It is a super-2 number, since 2×212102002121001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212102002123001) 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, 35350333686831 + ... + 35350333686836.

It is an arithmetic number, because the mean of its divisors is an integer number (70700667373668).

Almost surely, 2^{212102002121001} is an apocalyptic number.

It is an amenable number.

212102002121001 is a deficient number, since it is larger than the sum of its proper divisors (70700667373671).

212102002121001 is an equidigital number, since it uses as much as digits as its factorization.

212102002121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70700667373670.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212102002121001 its reverse (100121200201212), we get a palindrome (312223202322213).

The spelling of 212102002121001 in words is "two hundred twelve trillion, one hundred two billion, two million, one hundred twenty-one thousand, one".