1220221112201 has 16 divisors (see below), whose sum is σ = 1501934380800. Its totient is φ = 965370097728.

The previous prime is 1220221112197. The next prime is 1220221112203. The reversal of 1220221112201 is 1022111220221.

It is a cyclic number.

It is not a de Polignac number, because 1220221112201 - 2² = 1220221112197 is a prime.

It is a super-2 number, since 2×1220221112201² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220221112201.

It is not an unprimeable number, because it can be changed into a prime (1220221112203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570020 + ... + 1662938.

It is an arithmetic number, because the mean of its divisors is an integer number (93870898800).

Almost surely, 2^{1220221112201} is an apocalyptic number.

It is an amenable number.

1220221112201 is a deficient number, since it is larger than the sum of its proper divisors (281713268599).

1220221112201 is a wasteful number, since it uses less digits than its factorization.

1220221112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105208.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1220221112201 its reverse (1022111220221), we get a palindrome (2242332332422).

The spelling of 1220221112201 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred twelve thousand, two hundred one".