5342121221 has 4 divisors (see below), whose sum is σ = 5514447744. Its totient is φ = 5169794700.

The previous prime is 5342121203. The next prime is 5342121223. The reversal of 5342121221 is 1221212435.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5342121221 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 (5342121223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86163215 + ... + 86163276.

It is an arithmetic number, because the mean of its divisors is an integer number (1378611936).

Almost surely, 2^5342121221 is an apocalyptic number.

It is an amenable number.

5342121221 is a deficient number, since it is larger than the sum of its proper divisors (172326523).

5342121221 is a wasteful number, since it uses less digits than its factorization.

5342121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172326522.

The product of its digits is 960, while the sum is 23.

The square root of 5342121221 is about 73089.8161237255. The cubic root of 5342121221 is about 1748.1200187662.

Adding to 5342121221 its reverse (1221212435), we get a palindrome (6563333656).

The spelling of 5342121221 in words is "five billion, three hundred forty-two million, one hundred twenty-one thousand, two hundred twenty-one".