215562101112 has 24 divisors (see below), whose sum is σ = 583814024040. Its totient is φ = 71854033680.

The previous prime is 215562101093. The next prime is 215562101119. The reversal of 215562101112 is 211101265512.

It is a happy number.

215562101112 is a `hidden beast` number, since 2 + 1 + 556 + 2 + 101 + 1 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×215562101112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215562101119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1496958964 + ... + 1496959107.

It is an arithmetic number, because the mean of its divisors is an integer number (24325584335).

Almost surely, 2^215562101112 is an apocalyptic number.

It is an amenable number.

215562101112 is an abundant number, since it is smaller than the sum of its proper divisors (368251922928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215562101112 is a wasteful number, since it uses less digits than its factorization.

215562101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993918083 (or 2993918076 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

Adding to 215562101112 its reverse (211101265512), we get a palindrome (426663366624).

The spelling of 215562101112 in words is "two hundred fifteen billion, five hundred sixty-two million, one hundred one thousand, one hundred twelve".