1231222220033 has 16 divisors (see below), whose sum is σ = 1400250499200. Its totient is φ = 1074001615104.

The previous prime is 1231222220027. The next prime is 1231222220069. The reversal of 1231222220033 is 3300222221321.

It is a cyclic number.

It is not a de Polignac number, because 1231222220033 - 2¹⁶ = 1231222154497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231222219990 and 1231222220008.

It is not an unprimeable number, because it can be changed into a prime (1231222220003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24781208 + ... + 24830841.

It is an arithmetic number, because the mean of its divisors is an integer number (87515656200).

Almost surely, 2^{1231222220033} is an apocalyptic number.

1231222220033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1231222220033 is a deficient number, since it is larger than the sum of its proper divisors (169028279167).

1231222220033 is a wasteful number, since it uses less digits than its factorization.

1231222220033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49612168.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1231222220033 its reverse (3300222221321), we get a palindrome (4531444441354).

The spelling of 1231222220033 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-two million, two hundred twenty thousand, thirty-three".