1213100233232 has 20 divisors (see below), whose sum is σ = 2350732242540. Its totient is φ = 606459654528.

The previous prime is 1213100233217. The next prime is 1213100233237. The reversal of 1213100233232 is 2323320013121.

It can be written as a sum of positive squares in 2 ways, for example, as 390930059536 + 822170173696 = 625244^2 + 906736^2 .

It is a super-2 number, since 2×1213100233232² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1213100233198 and 1213100233207.

It is not an unprimeable number, because it can be changed into a prime (1213100233237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5543183 + ... + 5757870.

It is an arithmetic number, because the mean of its divisors is an integer number (117536612127).

Almost surely, 2^{1213100233232} is an apocalyptic number.

It is an amenable number.

1213100233232 is a deficient number, since it is larger than the sum of its proper divisors (1137632009308).

1213100233232 is a wasteful number, since it uses less digits than its factorization.

1213100233232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11307770 (or 11307764 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1213100233232 its reverse (2323320013121), we get a palindrome (3536420246353).

The spelling of 1213100233232 in words is "one trillion, two hundred thirteen billion, one hundred million, two hundred thirty-three thousand, two hundred thirty-two".