212201120221111 has 8 divisors (see below), whose sum is σ = 247675471626240. Its totient is φ = 178016745230808.

The previous prime is 212201120221093. The next prime is 212201120221151. The reversal of 212201120221111 is 111122021102212.

It is a happy number.

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 212201120221111 - 2¹⁷ = 212201120090039 is a prime.

It is a super-4 number, since 4×212201120221111⁴ (a number of 58 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201120221151) 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, 322494103351 + ... + 322494104008.

It is an arithmetic number, because the mean of its divisors is an integer number (30959433953280).

Almost surely, 2^{212201120221111} is an apocalyptic number.

212201120221111 is a deficient number, since it is larger than the sum of its proper divisors (35474351405129).

212201120221111 is an equidigital number, since it uses as much as digits as its factorization.

212201120221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644988207413.

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

Adding to 212201120221111 its reverse (111122021102212), we get a palindrome (323323141323323).

The spelling of 212201120221111 in words is "two hundred twelve trillion, two hundred one billion, one hundred twenty million, two hundred twenty-one thousand, one hundred eleven".