1213331101123 has 8 divisors (see below), whose sum is σ = 1255186183680. Its totient is φ = 1171477090560.

The previous prime is 1213331101069. The next prime is 1213331101139. The reversal of 1213331101123 is 3211011333121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213331101123 is a prime.

It is a super-2 number, since 2×1213331101123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213331101094 and 1213331101103.

It is not an unprimeable number, because it can be changed into a prime (1213331101153) 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 7 ways as a sum of consecutive naturals, for example, 2530003 + ... + 2971123.

It is an arithmetic number, because the mean of its divisors is an integer number (156898272960).

Almost surely, 2^{1213331101123} is an apocalyptic number.

1213331101123 is a deficient number, since it is larger than the sum of its proper divisors (41855082557).

1213331101123 is an equidigital number, since it uses as much as digits as its factorization.

1213331101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535997.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1213331101123 its reverse (3211011333121), we get a palindrome (4424342434244).

The spelling of 1213331101123 in words is "one trillion, two hundred thirteen billion, three hundred thirty-one million, one hundred one thousand, one hundred twenty-three".