20143402442221 has 8 divisors (see below), whose sum is σ = 21331078876800. Its totient is φ = 18956033830848.

The previous prime is 20143402442203. The next prime is 20143402442227. The reversal of 20143402442221 is 12224420434102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20143402442221 - 2¹⁵ = 20143402409453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143402442227) 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, 76821061 + ... + 77082826.

It is an arithmetic number, because the mean of its divisors is an integer number (2666384859600).

Almost surely, 2^{20143402442221} is an apocalyptic number.

It is an amenable number.

20143402442221 is a deficient number, since it is larger than the sum of its proper divisors (1187676434579).

20143402442221 is a wasteful number, since it uses less digits than its factorization.

20143402442221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153911603.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 20143402442221 its reverse (12224420434102), we get a palindrome (32367822876323).

The spelling of 20143402442221 in words is "twenty trillion, one hundred forty-three billion, four hundred two million, four hundred forty-two thousand, two hundred twenty-one".