7720050222521 has 8 divisors (see below), whose sum is σ = 9501600273984. Its totient is φ = 6108171604560.

The previous prime is 7720050222503. The next prime is 7720050222589. The reversal of 7720050222521 is 1252220500277.

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-7720050222521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7720050227521) 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, 42417858275 + ... + 42417858456.

It is an arithmetic number, because the mean of its divisors is an integer number (1187700034248).

Almost surely, 2^{7720050222521} is an apocalyptic number.

It is an amenable number.

7720050222521 is a deficient number, since it is larger than the sum of its proper divisors (1781550051463).

7720050222521 is a wasteful number, since it uses less digits than its factorization.

7720050222521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84835716751.

The product of its (nonzero) digits is 39200, while the sum is 35.

Adding to 7720050222521 its reverse (1252220500277), we get a palindrome (8972270722798).

The spelling of 7720050222521 in words is "seven trillion, seven hundred twenty billion, fifty million, two hundred twenty-two thousand, five hundred twenty-one".