2213506541997 has 24 divisors (see below), whose sum is σ = 3336808807800. Its totient is φ = 1412177077248.

The previous prime is 2213506541977. The next prime is 2213506542011. The reversal of 2213506541997 is 7991456053122.

2213506541997 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 5 + 0 + 6 + 541 + 9 + 97 = 666.

2213506541997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10624249476 + 2202882292521 = 103074^2 + 1484211^2 .

It is not a de Polignac number, because 2213506541997 - 2¹⁴ = 2213506525613 is a prime.

It is a super-2 number, since 2×2213506541997² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213506541977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37496472 + ... + 37555457.

It is an arithmetic number, because the mean of its divisors is an integer number (139033700325).

Almost surely, 2^{2213506541997} is an apocalyptic number.

It is an amenable number.

2213506541997 is a deficient number, since it is larger than the sum of its proper divisors (1123302265803).

2213506541997 is a wasteful number, since it uses less digits than its factorization.

2213506541997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75052077 (or 75052074 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The spelling of 2213506541997 in words is "two trillion, two hundred thirteen billion, five hundred six million, five hundred forty-one thousand, nine hundred ninety-seven".