1111212202223 has 2 divisors, whose sum is σ = 1111212202224. Its totient is φ = 1111212202222.

The previous prime is 1111212202213. The next prime is 1111212202267. The reversal of 1111212202223 is 3222022121111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111212202223 - 2⁶ = 1111212202159 is a prime.

It is a super-2 number, since 2×1111212202223² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111212202195 and 1111212202204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111212202213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555606101111 + 555606101112.

It is an arithmetic number, because the mean of its divisors is an integer number (555606101112).

Almost surely, 2^{1111212202223} is an apocalyptic number.

1111212202223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111212202223 is an equidigital number, since it uses as much as digits as its factorization.

1111212202223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1111212202223 its reverse (3222022121111), we get a palindrome (4333234323334).

The spelling of 1111212202223 in words is "one trillion, one hundred eleven billion, two hundred twelve million, two hundred two thousand, two hundred twenty-three".