1222100212201 has 24 divisors (see below), whose sum is σ = 1347482058624. Its totient is φ = 1099223400000.

The previous prime is 1222100212163. The next prime is 1222100212213. The reversal of 1222100212201 is 1022120012221.

It is a happy number.

It is not a de Polignac number, because 1222100212201 - 2²⁵ = 1222066657769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222100212001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209943871 + ... + 209949691.

It is an arithmetic number, because the mean of its divisors is an integer number (56145085776).

Almost surely, 2^{1222100212201} is an apocalyptic number.

1222100212201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222100212201 is a deficient number, since it is larger than the sum of its proper divisors (125381846423).

1222100212201 is a wasteful number, since it uses less digits than its factorization.

1222100212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7905 (or 7804 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222100212201 its reverse (1022120012221), we get a palindrome (2244220224422).

The spelling of 1222100212201 in words is "one trillion, two hundred twenty-two billion, one hundred million, two hundred twelve thousand, two hundred one".