212222201112201 has 16 divisors (see below), whose sum is σ = 342408929526144. Its totient is φ = 114136309841664.

The previous prime is 212222201112197. The next prime is 212222201112203. The reversal of 212222201112201 is 102211102222212.

It is not a de Polignac number, because 212222201112201 - 2² = 212222201112197 is a prime.

It is a super-2 number, since 2×212222201112201² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (212222201112203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297229973190 + ... + 297229973903.

It is an arithmetic number, because the mean of its divisors is an integer number (21400558095384).

Almost surely, 2^{212222201112201} is an apocalyptic number.

212222201112201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212222201112201 is a deficient number, since it is larger than the sum of its proper divisors (130186728413943).

212222201112201 is a wasteful number, since it uses less digits than its factorization.

212222201112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594459947120.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212222201112201 its reverse (102211102222212), we get a palindrome (314433303334413).

The spelling of 212222201112201 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred one million, one hundred twelve thousand, two hundred one".