1020001222201 has 4 divisors (see below), whose sum is σ = 1098462854692. Its totient is φ = 941539589712.

The previous prime is 1020001222199. The next prime is 1020001222211. The reversal of 1020001222201 is 1022221000201.

It is a happy number.

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 430447527225 + 589553694976 = 656085^2 + 767824^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020001222201 - 2¹ = 1020001222199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 78461632477 = 1020001222201 / (1 + 0 + 2 + 0 + 0 + 0 + 1 + 2 + 2 + 2 + 2 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020001222211) 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, 39230816226 + ... + 39230816251.

It is an arithmetic number, because the mean of its divisors is an integer number (274615713673).

Almost surely, 2^{1020001222201} is an apocalyptic number.

It is an amenable number.

1020001222201 is a deficient number, since it is larger than the sum of its proper divisors (78461632491).

1020001222201 is an equidigital number, since it uses as much as digits as its factorization.

1020001222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78461632490.

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

Adding to 1020001222201 its reverse (1022221000201), we get a palindrome (2042222222402).

The spelling of 1020001222201 in words is "one trillion, twenty billion, one million, two hundred twenty-two thousand, two hundred one".