2140567250221 has 4 divisors (see below), whose sum is σ = 2140571944444. Its totient is φ = 2140562556000.

The previous prime is 2140567250191. The next prime is 2140567250231. The reversal of 2140567250221 is 1220527650412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2076512702121 + 64054548100 = 1441011^2 + 253090^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140567250221 - 2⁷ = 2140567250093 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 (2140567250231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579410 + ... + 2603011.

It is an arithmetic number, because the mean of its divisors is an integer number (535142986111).

Almost surely, 2^{2140567250221} is an apocalyptic number.

It is an amenable number.

2140567250221 is a deficient number, since it is larger than the sum of its proper divisors (4694223).

2140567250221 is an equidigital number, since it uses as much as digits as its factorization.

2140567250221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4694222.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 2140567250221 in words is "two trillion, one hundred forty billion, five hundred sixty-seven million, two hundred fifty thousand, two hundred twenty-one".