7217065157211 has 48 divisors (see below), whose sum is σ = 13103324043264. Its totient is φ = 3725807758272.

The previous prime is 7217065157189. The next prime is 7217065157233. The reversal of 7217065157211 is 1127515607127.

7217065157211 is a `hidden beast` number, since 7 + 2 + 1 + 7 + 0 + 65 + 1 + 572 + 11 = 666.

It is an interprime number because it is at equal distance from previous prime (7217065157189) and next prime (7217065157233).

It is not a de Polignac number, because 7217065157211 - 2⁶ = 7217065157147 is a prime.

It is a super-2 number, since 2×7217065157211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7217065157261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93706671 + ... + 93783656.

It is an arithmetic number, because the mean of its divisors is an integer number (272985917568).

Almost surely, 2^{7217065157211} is an apocalyptic number.

7217065157211 is a deficient number, since it is larger than the sum of its proper divisors (5886258886053).

7217065157211 is a wasteful number, since it uses less digits than its factorization.

7217065157211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187490400 (or 187490397 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 45.

The spelling of 7217065157211 in words is "seven trillion, two hundred seventeen billion, sixty-five million, one hundred fifty-seven thousand, two hundred eleven".