1220492421432 has 80 divisors (see below), whose sum is σ = 3528783403200. Its totient is φ = 393707226240.

The previous prime is 1220492421431. The next prime is 1220492421437. The reversal of 1220492421432 is 2341242940221.

1220492421432 is a `hidden beast` number, since 1 + 2 + 20 + 492 + 4 + 2 + 143 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220492421431) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30358557 + ... + 30398732.

It is an arithmetic number, because the mean of its divisors is an integer number (44109792540).

Almost surely, 2^{1220492421432} is an apocalyptic number.

1220492421432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220492421432 is an abundant number, since it is smaller than the sum of its proper divisors (2308290981768).

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

1220492421432 is a wasteful number, since it uses less digits than its factorization.

1220492421432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60757338 (or 60757325 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 1220492421432 in words is "one trillion, two hundred twenty billion, four hundred ninety-two million, four hundred twenty-one thousand, four hundred thirty-two".