1243212212032 has 28 divisors (see below), whose sum is σ = 2819427696160. Its totient is φ = 532805233536.

The previous prime is 1243212212003. The next prime is 1243212212093. The reversal of 1243212212032 is 2302122123421.

It is a tau number, because it is divible by the number of its divisors (28).

It is a junction number, because it is equal to n+sod(n) for n = 1243212211988 and 1243212212006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387513182 + ... + 1387514077.

Almost surely, 2^{1243212212032} is an apocalyptic number.

It is an amenable number.

1243212212032 is an abundant number, since it is smaller than the sum of its proper divisors (1576215484128).

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

1243212212032 is an equidigital number, since it uses as much as digits as its factorization.

1243212212032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775027278 (or 2775027268 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1243212212032 its reverse (2302122123421), we get a palindrome (3545334335453).

The spelling of 1243212212032 in words is "one trillion, two hundred forty-three billion, two hundred twelve million, two hundred twelve thousand, thirty-two".