211212110221201 has 8 divisors (see below), whose sum is σ = 216145249870464. Its totient is φ = 206314081886640.

The previous prime is 211212110221183. The next prime is 211212110221219. The reversal of 211212110221201 is 102122011212112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (211212110221183) and next prime (211212110221219).

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 211212110221201 - 2⁵ = 211212110221169 is a prime.

It is a super-2 number, since 2×211212110221201² (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 (211212110221501) 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, 8777816505 + ... + 8777840566.

It is an arithmetic number, because the mean of its divisors is an integer number (27018156233808).

Almost surely, 2^{211212110221201} is an apocalyptic number.

It is an amenable number.

211212110221201 is a deficient number, since it is larger than the sum of its proper divisors (4933139649263).

211212110221201 is a wasteful number, since it uses less digits than its factorization.

211212110221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17555657351.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211212110221201 its reverse (102122011212112), we get a palindrome (313334121433313).

The spelling of 211212110221201 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred ten million, two hundred twenty-one thousand, two hundred one".