2221421354 has 4 divisors (see below), whose sum is σ = 3332132034. Its totient is φ = 1110710676.

The previous prime is 2221421333. The next prime is 2221421359. The reversal of 2221421354 is 4531241222.

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

It can be written as a sum of positive squares in only one way, i.e., 1753348129 + 468073225 = 41873^2 + 21635^2 .

It is not an unprimeable number, because it can be changed into a prime (2221421359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555355337 + ... + 555355340.

Almost surely, 2^2221421354 is an apocalyptic number.

2221421354 is a deficient number, since it is larger than the sum of its proper divisors (1110710680).

2221421354 is a wasteful number, since it uses less digits than its factorization.

2221421354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110710679.

The product of its digits is 3840, while the sum is 26.

The square root of 2221421354 is about 47131.9568233699. The cubic root of 2221421354 is about 1304.7990968993.

Adding to 2221421354 its reverse (4531241222), we get a palindrome (6752662576).

The spelling of 2221421354 in words is "two billion, two hundred twenty-one million, four hundred twenty-one thousand, three hundred fifty-four".