7540201311221 has 8 divisors (see below), whose sum is σ = 7663967284224. Its totient is φ = 7416440374320.

The previous prime is 7540201311187. The next prime is 7540201311259. The reversal of 7540201311221 is 1221131020457.

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-7540201311221 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 (7540201311521) 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, 1821356 + ... + 4289258.

It is an arithmetic number, because the mean of its divisors is an integer number (957995910528).

Almost surely, 2^{7540201311221} is an apocalyptic number.

It is an amenable number.

7540201311221 is a deficient number, since it is larger than the sum of its proper divisors (123765973003).

7540201311221 is a wasteful number, since it uses less digits than its factorization.

7540201311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518051.

The product of its (nonzero) digits is 3360, while the sum is 29.

Adding to 7540201311221 its reverse (1221131020457), we get a palindrome (8761332331678).

The spelling of 7540201311221 in words is "seven trillion, five hundred forty billion, two hundred one million, three hundred eleven thousand, two hundred twenty-one".