1211223022443 has 48 divisors (see below), whose sum is σ = 2097940755456. Its totient is φ = 658377149760.

The previous prime is 1211223022409. The next prime is 1211223022469. The reversal of 1211223022443 is 3442203221121.

1211223022443 is a `hidden beast` number, since 1 + 2 + 112 + 2 + 302 + 244 + 3 = 666.

It is not a de Polignac number, because 1211223022443 - 2¹⁸ = 1211222760299 is a prime.

It is a super-2 number, since 2×1211223022443² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211223022483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2046855 + ... + 2571392.

It is an arithmetic number, because the mean of its divisors is an integer number (43707099072).

Almost surely, 2^{1211223022443} is an apocalyptic number.

1211223022443 is a deficient number, since it is larger than the sum of its proper divisors (886717733013).

1211223022443 is a wasteful number, since it uses less digits than its factorization.

1211223022443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618464 (or 4618461 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1211223022443 its reverse (3442203221121), we get a palindrome (4653426243564).

The spelling of 1211223022443 in words is "one trillion, two hundred eleven billion, two hundred twenty-three million, twenty-two thousand, four hundred forty-three".