112001012100221 has 4 divisors (see below), whose sum is σ = 112992171499452. Its totient is φ = 111009852700992.

The previous prime is 112001012100199. The next prime is 112001012100239. The reversal of 112001012100221 is 122001210100211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21492217840900 + 90508794259321 = 4635970^2 + 9513611^2 .

It is a cyclic number.

It is not a de Polignac number, because 112001012100221 - 2¹⁸ = 112001011838077 is a prime.

It is a super-2 number, since 2×112001012100221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112001012100196 and 112001012100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112001012100421) 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, 495579699446 + ... + 495579699671.

It is an arithmetic number, because the mean of its divisors is an integer number (28248042874863).

Almost surely, 2^{112001012100221} is an apocalyptic number.

It is an amenable number.

112001012100221 is a deficient number, since it is larger than the sum of its proper divisors (991159399231).

112001012100221 is an equidigital number, since it uses as much as digits as its factorization.

112001012100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991159399230.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 112001012100221 its reverse (122001210100211), we get a palindrome (234002222200432).

The spelling of 112001012100221 in words is "one hundred twelve trillion, one billion, twelve million, one hundred thousand, two hundred twenty-one".