240553200111221 has 8 divisors (see below), whose sum is σ = 242815935695904. Its totient is φ = 238290734431120.

The previous prime is 240553200111209. The next prime is 240553200111233. The reversal of 240553200111221 is 122111002355042.

It is an interprime number because it is at equal distance from previous prime (240553200111209) and next prime (240553200111233).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240553200111221 is a prime.

It is a super-2 number, since 2×240553200111221² (a number of 30 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 (240553200111121) 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, 65685035 + ... + 69250488.

It is an arithmetic number, because the mean of its divisors is an integer number (30351991961988).

Almost surely, 2^{240553200111221} is an apocalyptic number.

It is an amenable number.

240553200111221 is a deficient number, since it is larger than the sum of its proper divisors (2262735584683).

240553200111221 is a wasteful number, since it uses less digits than its factorization.

240553200111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134952291.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 240553200111221 its reverse (122111002355042), we get a palindrome (362664202466263).

The spelling of 240553200111221 in words is "two hundred forty trillion, five hundred fifty-three billion, two hundred million, one hundred eleven thousand, two hundred twenty-one".