1220443435432 has 32 divisors (see below), whose sum is σ = 2471458903200. Its totient is φ = 561658279104.

The previous prime is 1220443435411. The next prime is 1220443435441. The reversal of 1220443435432 is 2345343440221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220443435391 and 1220443435400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16873182 + ... + 16945357.

It is an arithmetic number, because the mean of its divisors is an integer number (77233090725).

Almost surely, 2^{1220443435432} is an apocalyptic number.

It is an amenable number.

1220443435432 is an abundant number, since it is smaller than the sum of its proper divisors (1251015467768).

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

1220443435432 is a wasteful number, since it uses less digits than its factorization.

1220443435432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33818905 (or 33818901 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 37.

Adding to 1220443435432 its reverse (2345343440221), we get a palindrome (3565786875653).

The spelling of 1220443435432 in words is "one trillion, two hundred twenty billion, four hundred forty-three million, four hundred thirty-five thousand, four hundred thirty-two".