211212011002001 has 4 divisors (see below), whose sum is σ = 213885580761600. Its totient is φ = 208538441242404.

The previous prime is 211212011001961. The next prime is 211212011002009. The reversal of 211212011002001 is 100200110212112.

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-211212011002001 is a prime.

It is a super-2 number, since 2×211212011002001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211212011002009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1336784879681 + ... + 1336784879838.

It is an arithmetic number, because the mean of its divisors is an integer number (53471395190400).

Almost surely, 2^{211212011002001} is an apocalyptic number.

It is an amenable number.

211212011002001 is a deficient number, since it is larger than the sum of its proper divisors (2673569759599).

211212011002001 is an equidigital number, since it uses as much as digits as its factorization.

211212011002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673569759598.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211212011002001 its reverse (100200110212112), we get a palindrome (311412121214113).

The spelling of 211212011002001 in words is "two hundred eleven trillion, two hundred twelve billion, eleven million, two thousand, one".