2143224201321 has 80 divisors (see below), whose sum is σ = 3823927075584. Its totient is φ = 1169653136256.

The previous prime is 2143224201319. The next prime is 2143224201373. The reversal of 2143224201321 is 1231024223412.

2143224201321 is a `hidden beast` number, since 2 + 1 + 432 + 2 + 4 + 201 + 3 + 21 = 666.

It is not a de Polignac number, because 2143224201321 - 2¹ = 2143224201319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2143224201311) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8389935 + ... + 8641611.

Almost surely, 2^{2143224201321} is an apocalyptic number.

2143224201321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2143224201321 is a deficient number, since it is larger than the sum of its proper divisors (1680702874263).

2143224201321 is a wasteful number, since it uses less digits than its factorization.

2143224201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252372 (or 252363 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 2143224201321 its reverse (1231024223412), we get a palindrome (3374248424733).

The spelling of 2143224201321 in words is "two trillion, one hundred forty-three billion, two hundred twenty-four million, two hundred one thousand, three hundred twenty-one".