2142321340221 has 16 divisors (see below), whose sum is σ = 3174905059200. Its totient is φ = 1427721177024.

The previous prime is 2142321340163. The next prime is 2142321340223. The reversal of 2142321340221 is 1220431232412.

2142321340221 is a `hidden beast` number, since 2 + 1 + 4 + 23 + 213 + 402 + 21 = 666.

It is not a de Polignac number, because 2142321340221 - 2¹³ = 2142321332029 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142321340223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13616161 + ... + 13772598.

It is an arithmetic number, because the mean of its divisors is an integer number (198431566200).

Almost surely, 2^{2142321340221} is an apocalyptic number.

It is an amenable number.

2142321340221 is a deficient number, since it is larger than the sum of its proper divisors (1032583718979).

2142321340221 is a wasteful number, since it uses less digits than its factorization.

2142321340221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27391665 (or 27391659 counting only the distinct ones).

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

Adding to 2142321340221 its reverse (1220431232412), we get a palindrome (3362752572633).

The spelling of 2142321340221 in words is "two trillion, one hundred forty-two billion, three hundred twenty-one million, three hundred forty thousand, two hundred twenty-one".