2222211111251 has 2 divisors, whose sum is σ = 2222211111252. Its totient is φ = 2222211111250.

The previous prime is 2222211111221. The next prime is 2222211111259. The reversal of 2222211111251 is 1521111122222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2222211111251 - 2¹⁰ = 2222211110227 is a prime.

It is not a weakly prime, because it can be changed into another prime (2222211111259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111105555625 + 1111105555626.

It is an arithmetic number, because the mean of its divisors is an integer number (1111105555626).

Almost surely, 2^{2222211111251} is an apocalyptic number.

2222211111251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222211111251 is an equidigital number, since it uses as much as digits as its factorization.

2222211111251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320, while the sum is 23.

Adding to 2222211111251 its reverse (1521111122222), we get a palindrome (3743322233473).

The spelling of 2222211111251 in words is "two trillion, two hundred twenty-two billion, two hundred eleven million, one hundred eleven thousand, two hundred fifty-one".