1200100222271 has 2 divisors, whose sum is σ = 1200100222272. Its totient is φ = 1200100222270.

The previous prime is 1200100222171. The next prime is 1200100222273. The reversal of 1200100222271 is 1722220010021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200100222271 - 2²² = 1200096027967 is a prime.

Together with 1200100222273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200100222273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600050111135 + 600050111136.

It is an arithmetic number, because the mean of its divisors is an integer number (600050111136).

Almost surely, 2^{1200100222271} is an apocalyptic number.

1200100222271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200100222271 is an equidigital number, since it uses as much as digits as its factorization.

1200100222271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 1200100222271 its reverse (1722220010021), we get a palindrome (2922320232292).

The spelling of 1200100222271 in words is "one trillion, two hundred billion, one hundred million, two hundred twenty-two thousand, two hundred seventy-one".