1220022220201 has 4 divisors (see below), whose sum is σ = 1291788233172. Its totient is φ = 1148256207232.

The previous prime is 1220022220127. The next prime is 1220022220217. The reversal of 1220022220201 is 1020222200221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 988950691600 + 231071528601 = 994460^2 + 480699^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220022220201 - 2³¹ = 1217874736553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220022220301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35883006460 + ... + 35883006493.

It is an arithmetic number, because the mean of its divisors is an integer number (322947058293).

Almost surely, 2^{1220022220201} is an apocalyptic number.

It is an amenable number.

1220022220201 is a deficient number, since it is larger than the sum of its proper divisors (71766012971).

1220022220201 is an equidigital number, since it uses as much as digits as its factorization.

1220022220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71766012970.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1220022220201 its reverse (1020222200221), we get a palindrome (2240244420422).

The spelling of 1220022220201 in words is "one trillion, two hundred twenty billion, twenty-two million, two hundred twenty thousand, two hundred one".