1220100200201 has 2 divisors, whose sum is σ = 1220100200202. Its totient is φ = 1220100200200.

The previous prime is 1220100200177. The next prime is 1220100200227. The reversal of 1220100200201 is 1020020010221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1069807519225 + 150292680976 = 1034315^2 + 387676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220100200201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220100200261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610050100100 + 610050100101.

It is an arithmetic number, because the mean of its divisors is an integer number (610050100101).

Almost surely, 2^{1220100200201} is an apocalyptic number.

It is an amenable number.

1220100200201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220100200201 is an equidigital number, since it uses as much as digits as its factorization.

1220100200201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1220100200201 its reverse (1020020010221), we get a palindrome (2240120210422).

The spelling of 1220100200201 in words is "one trillion, two hundred twenty billion, one hundred million, two hundred thousand, two hundred one".