221112121001201 has 4 divisors (see below), whose sum is σ = 221112338483712. Its totient is φ = 221111903518692.

The previous prime is 221112121001173. The next prime is 221112121001227. The reversal of 221112121001201 is 102100121211122.

221112121001201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221112121001201 - 2¹⁴ = 221112120984817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221112121001201.

It is not an unprimeable number, because it can be changed into a prime (221112121801201) 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, 107209025 + ... + 109251998.

It is an arithmetic number, because the mean of its divisors is an integer number (55278084620928).

Almost surely, 2^{221112121001201} is an apocalyptic number.

It is an amenable number.

221112121001201 is a deficient number, since it is larger than the sum of its proper divisors (217482511).

221112121001201 is a wasteful number, since it uses less digits than its factorization.

221112121001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217482510.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221112121001201 its reverse (102100121211122), we get a palindrome (323212242212323).

The spelling of 221112121001201 in words is "two hundred twenty-one trillion, one hundred twelve billion, one hundred twenty-one million, one thousand, two hundred one".