4021221003432 has 16 divisors (see below), whose sum is σ = 10053052508640. Its totient is φ = 1340407001136.

The previous prime is 4021221003413. The next prime is 4021221003463. The reversal of 4021221003432 is 2343001221204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 167550875143 = 4021221003432 / (4 + 0 + 2 + 1 + 2 + 2 + 1 + 0 + 0 + 3 + 4 + 3 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83775437548 + ... + 83775437595.

It is an arithmetic number, because the mean of its divisors is an integer number (628315781790).

Almost surely, 2^{4021221003432} is an apocalyptic number.

It is an amenable number.

4021221003432 is an abundant number, since it is smaller than the sum of its proper divisors (6031831505208).

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

4021221003432 is a wasteful number, since it uses less digits than its factorization.

4021221003432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167550875152 (or 167550875148 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 4021221003432 its reverse (2343001221204), we get a palindrome (6364222224636).

The spelling of 4021221003432 in words is "four trillion, twenty-one billion, two hundred twenty-one million, three thousand, four hundred thirty-two".