2221253542 has 4 divisors (see below), whose sum is σ = 3331880316. Its totient is φ = 1110626770.

The previous prime is 2221253467. The next prime is 2221253549. The reversal of 2221253542 is 2453521222.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2221253542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221253549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555313384 + ... + 555313387.

It is an arithmetic number, because the mean of its divisors is an integer number (832970079).

Almost surely, 2^2221253542 is an apocalyptic number.

2221253542 is a deficient number, since it is larger than the sum of its proper divisors (1110626774).

2221253542 is a wasteful number, since it uses less digits than its factorization.

2221253542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110626773.

The product of its digits is 9600, while the sum is 28.

The square root of 2221253542 is about 47130.1765538811. The cubic root of 2221253542 is about 1304.7662400890.

Adding to 2221253542 its reverse (2453521222), we get a palindrome (4674774764).

The spelling of 2221253542 in words is "two billion, two hundred twenty-one million, two hundred fifty-three thousand, five hundred forty-two".