1220532144432 has 40 divisors (see below), whose sum is σ = 3338514397296. Its totient is φ = 382912045056.

The previous prime is 1220532144431. The next prime is 1220532144443. The reversal of 1220532144432 is 2344412350221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220532144393 and 1220532144402.

It is not an unprimeable number, because it can be changed into a prime (1220532144431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747874273 + ... + 747875904.

Almost surely, 2^{1220532144432} is an apocalyptic number.

1220532144432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220532144432 is an abundant number, since it is smaller than the sum of its proper divisors (2117982252864).

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

1220532144432 is a wasteful number, since it uses less digits than its factorization.

1220532144432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495750205 (or 1495750199 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 1220532144432 its reverse (2344412350221), we get a palindrome (3564944494653).

The spelling of 1220532144432 in words is "one trillion, two hundred twenty billion, five hundred thirty-two million, one hundred forty-four thousand, four hundred thirty-two".