1200021112211 has 2 divisors, whose sum is σ = 1200021112212. Its totient is φ = 1200021112210.

The previous prime is 1200021112151. The next prime is 1200021112321. The reversal of 1200021112211 is 1122111200021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200021112211 - 2³⁸ = 925143205267 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200021612211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600010556105 + 600010556106.

It is an arithmetic number, because the mean of its divisors is an integer number (600010556106).

Almost surely, 2^{1200021112211} is an apocalyptic number.

1200021112211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200021112211 is an equidigital number, since it uses as much as digits as its factorization.

1200021112211 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 14.

Adding to 1200021112211 its reverse (1122111200021), we get a palindrome (2322132312232).

It can be divided in two parts, 1200021 and 112211, that multiplied together give a palindrome (134655556431).

The spelling of 1200021112211 in words is "one trillion, two hundred billion, twenty-one million, one hundred twelve thousand, two hundred eleven".