7215020221166 has 32 divisors (see below), whose sum is σ = 11173683665088. Its totient is φ = 3491491461120.

The previous prime is 7215020221151. The next prime is 7215020221169. The reversal of 7215020221166 is 6611220205127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7215020221169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222511631 + ... + 222544053.

It is an arithmetic number, because the mean of its divisors is an integer number (349177614534).

Almost surely, 2^{7215020221166} is an apocalyptic number.

7215020221166 is a deficient number, since it is larger than the sum of its proper divisors (3958663443922).

7215020221166 is a wasteful number, since it uses less digits than its factorization.

7215020221166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48236.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 7215020221166 in words is "seven trillion, two hundred fifteen billion, twenty million, two hundred twenty-one thousand, one hundred sixty-six".