211212222211101 has 8 divisors (see below), whose sum is σ = 281689767806400. Its totient is φ = 140771412378272.

The previous prime is 211212222211099. The next prime is 211212222211213. The reversal of 211212222211101 is 101112222212112.

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 211212222211101 - 2¹ = 211212222211099 is a prime.

It is a super-2 number, since 2×211212222211101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211212222211301) 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, 9183927201 + ... + 9183950198.

It is an arithmetic number, because the mean of its divisors is an integer number (35211220975800).

Almost surely, 2^{211212222211101} is an apocalyptic number.

It is an amenable number.

211212222211101 is a deficient number, since it is larger than the sum of its proper divisors (70477545595299).

211212222211101 is a wasteful number, since it uses less digits than its factorization.

211212222211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18367881235.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 211212222211101 its reverse (101112222212112), we get a palindrome (312324444423213).

The spelling of 211212222211101 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred twenty-two million, two hundred eleven thousand, one hundred one".