112212001221 has 4 divisors (see below), whose sum is σ = 149616001632. Its totient is φ = 74808000812.

The previous prime is 112212001207. The next prime is 112212001243. The reversal of 112212001221 is 122100212211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 112212001221 - 2⁷ = 112212001093 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 112212001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112212001021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18702000201 + ... + 18702000206.

It is an arithmetic number, because the mean of its divisors is an integer number (37404000408).

Almost surely, 2^112212001221 is an apocalyptic number.

It is an amenable number.

112212001221 is a deficient number, since it is larger than the sum of its proper divisors (37404000411).

112212001221 is an equidigital number, since it uses as much as digits as its factorization.

112212001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37404000410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 112212001221 its reverse (122100212211), we get a palindrome (234312213432).

The spelling of 112212001221 in words is "one hundred twelve billion, two hundred twelve million, one thousand, two hundred twenty-one".