1222001111211 has 8 divisors (see below), whose sum is σ = 1633097714640. Its totient is φ = 812785957632.

The previous prime is 1222001111171. The next prime is 1222001111249. The reversal of 1222001111211 is 1121111002221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222001111211 - 2⁶ = 1222001111147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222001111291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470360946 + ... + 470363543.

It is an arithmetic number, because the mean of its divisors is an integer number (204137214330).

Almost surely, 2^{1222001111211} is an apocalyptic number.

1222001111211 is a deficient number, since it is larger than the sum of its proper divisors (411096603429).

1222001111211 is an equidigital number, since it uses as much as digits as its factorization.

1222001111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940724925.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1222001111211 its reverse (1121111002221), we get a palindrome (2343112113432).

The spelling of 1222001111211 in words is "one trillion, two hundred twenty-two billion, one million, one hundred eleven thousand, two hundred eleven".