55223201321 has 8 divisors (see below), whose sum is σ = 57206033664. Its totient is φ = 53252958960.

The previous prime is 55223201311. The next prime is 55223201323. The reversal of 55223201321 is 12310232255.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55223201321 - 2¹⁴ = 55223184937 is a prime.

It is a super-2 number, since 2×55223201321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55223201323) 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, 3138566 + ... + 3156111.

It is an arithmetic number, because the mean of its divisors is an integer number (7150754208).

Almost surely, 2^55223201321 is an apocalyptic number.

It is an amenable number.

55223201321 is a deficient number, since it is larger than the sum of its proper divisors (1982832343).

55223201321 is a wasteful number, since it uses less digits than its factorization.

55223201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6294991.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 55223201321 its reverse (12310232255), we get a palindrome (67533433576).

The spelling of 55223201321 in words is "fifty-five billion, two hundred twenty-three million, two hundred one thousand, three hundred twenty-one".