1220012020201 has 16 divisors (see below), whose sum is σ = 1392259050000. Its totient is φ = 1059071090688.

The previous prime is 1220012020177. The next prime is 1220012020207. The reversal of 1220012020201 is 1020202100221.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 23088498601 + 1196923521600 = 151949^2 + 1094040^2 .

It is not a de Polignac number, because 1220012020201 - 2⁵ = 1220012020169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1220012020207) 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 15 ways as a sum of consecutive naturals, for example, 1933906 + ... + 2485963.

It is an arithmetic number, because the mean of its divisors is an integer number (87016190625).

Almost surely, 2^{1220012020201} is an apocalyptic number.

It is an amenable number.

1220012020201 is a deficient number, since it is larger than the sum of its proper divisors (172247029799).

1220012020201 is a wasteful number, since it uses less digits than its factorization.

1220012020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421148.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1220012020201 its reverse (1020202100221), we get a palindrome (2240214120422).

The spelling of 1220012020201 in words is "one trillion, two hundred twenty billion, twelve million, twenty thousand, two hundred one".