2223213031221 has 32 divisors (see below), whose sum is σ = 3669438393600. Its totient is φ = 1165905252864.

The previous prime is 2223213031189. The next prime is 2223213031231. The reversal of 2223213031221 is 1221303123222.

It is not a de Polignac number, because 2223213031221 - 2⁵ = 2223213031189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2223213031191 and 2223213031200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223213031231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23489296 + ... + 23583753.

It is an arithmetic number, because the mean of its divisors is an integer number (114669949800).

Almost surely, 2^{2223213031221} is an apocalyptic number.

2223213031221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2223213031221 is a deficient number, since it is larger than the sum of its proper divisors (1446225362379).

2223213031221 is a wasteful number, since it uses less digits than its factorization.

2223213031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47073245.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 2223213031221 its reverse (1221303123222), we get a palindrome (3444516154443).

The spelling of 2223213031221 in words is "two trillion, two hundred twenty-three billion, two hundred thirteen million, thirty-one thousand, two hundred twenty-one".