1002200221091 has 4 divisors (see below), whose sum is σ = 1006949985384. Its totient is φ = 997450456800.

The previous prime is 1002200221067. The next prime is 1002200221109. The reversal of 1002200221091 is 1901220022001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1002200221091 - 2⁶ = 1002200221027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002200721091) 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, 2374881830 + ... + 2374882251.

It is an arithmetic number, because the mean of its divisors is an integer number (251737496346).

Almost surely, 2^{1002200221091} is an apocalyptic number.

1002200221091 is a deficient number, since it is larger than the sum of its proper divisors (4749764293).

1002200221091 is an equidigital number, since it uses as much as digits as its factorization.

1002200221091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4749764292.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1002200221091 its reverse (1901220022001), we get a palindrome (2903420243092).

The spelling of 1002200221091 in words is "one trillion, two billion, two hundred million, two hundred twenty-one thousand, ninety-one".