4245501542221 has 8 divisors (see below), whose sum is σ = 4249675139904. Its totient is φ = 4241328201600.

The previous prime is 4245501542207. The next prime is 4245501542231. The reversal of 4245501542221 is 1222451055424.

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

It is a cyclic number.

It is not a de Polignac number, because 4245501542221 - 2³³ = 4236911607629 is a prime.

It is a super-2 number, since 2×4245501542221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4245501542231) 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, 61883280 + ... + 61951846.

It is an arithmetic number, because the mean of its divisors is an integer number (531209392488).

Almost surely, 2^{4245501542221} is an apocalyptic number.

It is an amenable number.

4245501542221 is a deficient number, since it is larger than the sum of its proper divisors (4173597683).

4245501542221 is a wasteful number, since it uses less digits than its factorization.

4245501542221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128531.

The product of its (nonzero) digits is 128000, while the sum is 37.

Adding to 4245501542221 its reverse (1222451055424), we get a palindrome (5467952597645).

The spelling of 4245501542221 in words is "four trillion, two hundred forty-five billion, five hundred one million, five hundred forty-two thousand, two hundred twenty-one".