2213554421 has 4 divisors (see below), whose sum is σ = 2383827852. Its totient is φ = 2043280992.

The previous prime is 2213554417. The next prime is 2213554423. The reversal of 2213554421 is 1244553122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109956196 + 2103598225 = 10486^2 + 45865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2213554421 - 2² = 2213554417 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 (2213554423) 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, 85136696 + ... + 85136721.

It is an arithmetic number, because the mean of its divisors is an integer number (595956963).

Almost surely, 2^2213554421 is an apocalyptic number.

It is an amenable number.

2213554421 is a deficient number, since it is larger than the sum of its proper divisors (170273431).

2213554421 is a wasteful number, since it uses less digits than its factorization.

2213554421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170273430.

The product of its digits is 9600, while the sum is 29.

The square root of 2213554421 is about 47048.4263392518. The cubic root of 2213554421 is about 1303.2570049178.

The spelling of 2213554421 in words is "two billion, two hundred thirteen million, five hundred fifty-four thousand, four hundred twenty-one".