1213331104040 has 64 divisors (see below), whose sum is σ = 2979244143360. Its totient is φ = 441053118720.

The previous prime is 1213331104031. The next prime is 1213331104133. The reversal of 1213331104040 is 404011333121.

It is a junction number, because it is equal to n+sod(n) for n = 1213331103997 and 1213331104015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 737729 + ... + 1723631.

It is an arithmetic number, because the mean of its divisors is an integer number (46550689740).

Almost surely, 2^{1213331104040} is an apocalyptic number.

1213331104040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213331104040 is an abundant number, since it is smaller than the sum of its proper divisors (1765913039320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213331104040 is a wasteful number, since it uses less digits than its factorization.

1213331104040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988722 (or 988718 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1213331104040 its reverse (404011333121), we get a palindrome (1617342437161).

The spelling of 1213331104040 in words is "one trillion, two hundred thirteen billion, three hundred thirty-one million, one hundred four thousand, forty".