1566112101 has 4 divisors (see below), whose sum is σ = 2088149472. Its totient is φ = 1044074732.

The previous prime is 1566112099. The next prime is 1566112103. The reversal of 1566112101 is 1012116651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1566112099) and next prime (1566112103).

It is a cyclic number.

It is not a de Polignac number, because 1566112101 - 2¹ = 1566112099 is a prime.

It is a super-2 number, since 2×1566112101² = 4905414225797268402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566112103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261018681 + ... + 261018686.

It is an arithmetic number, because the mean of its divisors is an integer number (522037368).

Almost surely, 2^1566112101 is an apocalyptic number.

It is an amenable number.

1566112101 is a deficient number, since it is larger than the sum of its proper divisors (522037371).

1566112101 is an equidigital number, since it uses as much as digits as its factorization.

1566112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522037370.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1566112101 is about 39574.1342419515. The cubic root of 1566112101 is about 1161.2907009232.

Adding to 1566112101 its reverse (1012116651), we get a palindrome (2578228752).

The spelling of 1566112101 in words is "one billion, five hundred sixty-six million, one hundred twelve thousand, one hundred one".