201100112120021 has 8 divisors (see below), whose sum is σ = 201345156712800. Its totient is φ = 200855073463920.

The previous prime is 201100112119987. The next prime is 201100112120023. The reversal of 201100112120021 is 120021211001102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201100112120021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201100112119978 and 201100112120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201100112120023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68302910 + ... + 71186288.

It is an arithmetic number, because the mean of its divisors is an integer number (25168144589100).

Almost surely, 2^{201100112120021} is an apocalyptic number.

It is an amenable number.

201100112120021 is a deficient number, since it is larger than the sum of its proper divisors (245044592779).

201100112120021 is an equidigital number, since it uses as much as digits as its factorization.

201100112120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968339.

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

Adding to 201100112120021 its reverse (120021211001102), we get a palindrome (321121323121123).

The spelling of 201100112120021 in words is "two hundred one trillion, one hundred billion, one hundred twelve million, one hundred twenty thousand, twenty-one".