2616347111221 has 12 divisors (see below), whose sum is σ = 2735141262700. Its totient is φ = 2502506793600.

The previous prime is 2616347111171. The next prime is 2616347111269. The reversal of 2616347111221 is 1221117436162.

It can be written as a sum of positive squares in 2 ways, for example, as 761264975025 + 1855082136196 = 872505^2 + 1362014^2 .

It is not a de Polignac number, because 2616347111221 - 2¹⁵ = 2616347078453 is a prime.

It is a super-2 number, since 2×2616347111221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2616347118221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19612855 + ... + 19745803.

Almost surely, 2^{2616347111221} is an apocalyptic number.

It is an amenable number.

2616347111221 is a deficient number, since it is larger than the sum of its proper divisors (118794151479).

2616347111221 is a wasteful number, since it uses less digits than its factorization.

2616347111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170196 (or 170173 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The spelling of 2616347111221 in words is "two trillion, six hundred sixteen billion, three hundred forty-seven million, one hundred eleven thousand, two hundred twenty-one".