274212021 has 4 divisors (see below), whose sum is σ = 365616032. Its totient is φ = 182808012.

The previous prime is 274212007. The next prime is 274212067. The reversal of 274212021 is 120212472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 274212021 - 2⁷ = 274211893 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 (274212821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45702001 + ... + 45702006.

It is an arithmetic number, because the mean of its divisors is an integer number (91404008).

Almost surely, 2^274212021 is an apocalyptic number.

It is an amenable number.

274212021 is a deficient number, since it is larger than the sum of its proper divisors (91404011).

274212021 is an equidigital number, since it uses as much as digits as its factorization.

274212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91404010.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 274212021 is about 16559.3484473273. The cubic root of 274212021 is about 649.6740148444.

Adding to 274212021 its reverse (120212472), we get a palindrome (394424493).

The spelling of 274212021 in words is "two hundred seventy-four million, two hundred twelve thousand, twenty-one".