1222121202201 has 24 divisors (see below), whose sum is σ = 1811515305600. Its totient is φ = 793519536096.

The previous prime is 1222121202173. The next prime is 1222121202217. The reversal of 1222121202201 is 1022021212221.

It is a happy number.

1222121202201 is a `hidden beast` number, since 12 + 221 + 212 + 0 + 220 + 1 = 666.

It is not a de Polignac number, because 1222121202201 - 2¹⁸ = 1222120940057 is a prime.

It is a super-3 number, since 3×1222121202201³ (a number of 37 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1222121202301) 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, 4389201 + ... + 4659326.

It is an arithmetic number, because the mean of its divisors is an integer number (75479804400).

Almost surely, 2^{1222121202201} is an apocalyptic number.

It is an amenable number.

1222121202201 is a deficient number, since it is larger than the sum of its proper divisors (589394103399).

1222121202201 is a wasteful number, since it uses less digits than its factorization.

1222121202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048925 (or 9048922 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222121202201 its reverse (1022021212221), we get a palindrome (2244142414422).

The spelling of 1222121202201 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred two thousand, two hundred one".