1220122112201 has 32 divisors (see below), whose sum is σ = 1368012250368. Its totient is φ = 1082199951360.

The previous prime is 1220122112191. The next prime is 1220122112213. The reversal of 1220122112201 is 1022112210221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220122112201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220122112201.

It is not an unprimeable number, because it can be changed into a prime (1220122112501) 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 31 ways as a sum of consecutive naturals, for example, 26836250 + ... + 26881676.

It is an arithmetic number, because the mean of its divisors is an integer number (42750382824).

Almost surely, 2^{1220122112201} is an apocalyptic number.

It is an amenable number.

1220122112201 is a deficient number, since it is larger than the sum of its proper divisors (147890138167).

1220122112201 is a wasteful number, since it uses less digits than its factorization.

1220122112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46481.

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

Adding to 1220122112201 its reverse (1022112210221), we get a palindrome (2242234322422).

The spelling of 1220122112201 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred twelve thousand, two hundred one".