1220121201201 has 32 divisors (see below), whose sum is σ = 1929154790400. Its totient is φ = 671136459840.

The previous prime is 1220121201191. The next prime is 1220121201227. The reversal of 1220121201201 is 1021021210221.

It is not a de Polignac number, because 1220121201201 - 2⁷ = 1220121201073 is a prime.

It is a super-2 number, since 2×1220121201201² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220121201241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2824831 + ... + 3227988.

It is an arithmetic number, because the mean of its divisors is an integer number (60286087200).

Almost surely, 2^{1220121201201} is an apocalyptic number.

It is an amenable number.

1220121201201 is a deficient number, since it is larger than the sum of its proper divisors (709033589199).

1220121201201 is a wasteful number, since it uses less digits than its factorization.

1220121201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6053189.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220121201201 its reverse (1021021210221), we get a palindrome (2241142411422).

The spelling of 1220121201201 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, two hundred one thousand, two hundred one".