1220222211201 has 24 divisors (see below), whose sum is σ = 2028826712640. Its totient is φ = 692253500256.

The previous prime is 1220222211199. The next prime is 1220222211209. The reversal of 1220222211201 is 1021122220221.

It is a happy number.

1220222211201 is a `hidden beast` number, since 1 + 220 + 22 + 221 + 1 + 201 = 666.

It is not a de Polignac number, because 1220222211201 - 2¹ = 1220222211199 is a prime.

It is a super-4 number, since 4×1220222211201⁴ (a number of 49 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220222211209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69662490 + ... + 69680003.

It is an arithmetic number, because the mean of its divisors is an integer number (84534446360).

Almost surely, 2^{1220222211201} is an apocalyptic number.

It is an amenable number.

1220222211201 is a deficient number, since it is larger than the sum of its proper divisors (808604501439).

1220222211201 is a wasteful number, since it uses less digits than its factorization.

1220222211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139342645 (or 139342642 counting only the distinct ones).

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

Adding to 1220222211201 its reverse (1021122220221), we get a palindrome (2241344431422).

The spelling of 1220222211201 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred eleven thousand, two hundred one".