2223154252221 has 8 divisors (see below), whose sum is σ = 3387663622464. Its totient is φ = 1270373858400.

The previous prime is 2223154252201. The next prime is 2223154252261. The reversal of 2223154252221 is 1222524513222.

2223154252221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2223154252221 - 2²¹ = 2223152155069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223154252201) 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, 52932244080 + ... + 52932244121.

It is an arithmetic number, because the mean of its divisors is an integer number (423457952808).

Almost surely, 2^{2223154252221} is an apocalyptic number.

2223154252221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2223154252221 is a deficient number, since it is larger than the sum of its proper divisors (1164509370243).

2223154252221 is a wasteful number, since it uses less digits than its factorization.

2223154252221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105864488211.

The product of its digits is 38400, while the sum is 33.

Adding to 2223154252221 its reverse (1222524513222), we get a palindrome (3445678765443).

It can be divided in two parts, 222315 and 4252221, that added together give a triangular number (4474536 = T₂₉₉₁).

The spelling of 2223154252221 in words is "two trillion, two hundred twenty-three billion, one hundred fifty-four million, two hundred fifty-two thousand, two hundred twenty-one".