1220211010201 has 4 divisors (see below), whose sum is σ = 1220213821492. Its totient is φ = 1220208198912.

The previous prime is 1220211010153. The next prime is 1220211010229. The reversal of 1220211010201 is 1020101120221.

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 321431168601 + 898779841600 = 566949^2 + 948040^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220211010201 - 2¹¹ = 1220211008153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220211010241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601080 + ... + 1673833.

It is an arithmetic number, because the mean of its divisors is an integer number (305053455373).

Almost surely, 2^{1220211010201} is an apocalyptic number.

It is an amenable number.

1220211010201 is a deficient number, since it is larger than the sum of its proper divisors (2811291).

1220211010201 is an equidigital number, since it uses as much as digits as its factorization.

1220211010201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811290.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220211010201 its reverse (1020101120221), we get a palindrome (2240312130422).

The spelling of 1220211010201 in words is "one trillion, two hundred twenty billion, two hundred eleven million, ten thousand, two hundred one".