7221155605106 has 32 divisors (see below), whose sum is σ = 11143371775536. Its totient is φ = 3507455232000.

The previous prime is 7221155605087. The next prime is 7221155605129. The reversal of 7221155605106 is 6015065511227.

It can be written as a sum of positive squares in 8 ways, for example, as 2802158821225 + 4418996783881 = 1673965^2 + 2102141^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200230316 + ... + 200266376.

Almost surely, 2^{7221155605106} is an apocalyptic number.

7221155605106 is a deficient number, since it is larger than the sum of its proper divisors (3922216170430).

7221155605106 is a wasteful number, since it uses less digits than its factorization.

7221155605106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46478.

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 7221155605106 in words is "seven trillion, two hundred twenty-one billion, one hundred fifty-five million, six hundred five thousand, one hundred six".