4552213131221 has 8 divisors (see below), whose sum is σ = 5508560427840. Its totient is φ = 3672373618368.

The previous prime is 4552213131217. The next prime is 4552213131227. The reversal of 4552213131221 is 1221313122554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4552213131221 - 2² = 4552213131217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4552213131227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19126945811 + ... + 19126946048.

It is an arithmetic number, because the mean of its divisors is an integer number (688570053480).

Almost surely, 2^{4552213131221} is an apocalyptic number.

It is an amenable number.

4552213131221 is a deficient number, since it is larger than the sum of its proper divisors (956347296619).

4552213131221 is a wasteful number, since it uses less digits than its factorization.

4552213131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38253891883.

The product of its digits is 14400, while the sum is 32.

Adding to 4552213131221 its reverse (1221313122554), we get a palindrome (5773526253775).

The spelling of 4552213131221 in words is "four trillion, five hundred fifty-two billion, two hundred thirteen million, one hundred thirty-one thousand, two hundred twenty-one".