211212222211001 has 64 divisors (see below), whose sum is σ = 247720839895296. Its totient is φ = 177957771264000.

The previous prime is 211212222210961. The next prime is 211212222211027. The reversal of 211212222211001 is 100112222212112.

It is not a de Polignac number, because 211212222211001 - 2¹⁰ = 211212222209977 is a prime.

It is a super-2 number, since 2×211212222211001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211212222211051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2652280481 + ... + 2652360113.

It is an arithmetic number, because the mean of its divisors is an integer number (3870638123364).

Almost surely, 2^{211212222211001} is an apocalyptic number.

It is an amenable number.

211212222211001 is a deficient number, since it is larger than the sum of its proper divisors (36508617684295).

211212222211001 is a wasteful number, since it uses less digits than its factorization.

211212222211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80522.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211212222211001 its reverse (100112222212112), we get a palindrome (311324444423113).

The spelling of 211212222211001 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred twenty-two million, two hundred eleven thousand, one".