1223331043011 has 48 divisors (see below), whose sum is σ = 2146253637888. Its totient is φ = 602049412800.

The previous prime is 1223331043009. The next prime is 1223331043027. The reversal of 1223331043011 is 1103401333221.

It is not a de Polignac number, because 1223331043011 - 2¹ = 1223331043009 is a prime.

It is a super-4 number, since 4×1223331043011⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1223331043511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7251520 + ... + 7418301.

It is an arithmetic number, because the mean of its divisors is an integer number (44713617456).

Almost surely, 2^{1223331043011} is an apocalyptic number.

1223331043011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1223331043011 is a deficient number, since it is larger than the sum of its proper divisors (922922594877).

1223331043011 is a wasteful number, since it uses less digits than its factorization.

1223331043011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14669880 (or 14669861 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1223331043011 its reverse (1103401333221), we get a palindrome (2326732376232).

The spelling of 1223331043011 in words is "one trillion, two hundred twenty-three billion, three hundred thirty-one million, forty-three thousand, eleven".