101100112220021 has 4 divisors (see below), whose sum is σ = 101106655508544. Its totient is φ = 101093568931500.

The previous prime is 101100112219987. The next prime is 101100112220047. The reversal of 101100112220021 is 120022211001101.

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 a cyclic number.

It is not a de Polignac number, because 101100112220021 - 2⁴⁶ = 30731368042357 is a prime.

It is a super-2 number, since 2×101100112220021² (a number of 29 digits) contains 22 as substring.

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 = 101100112219978 and 101100112220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101100112220221) 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, 3271621085 + ... + 3271651986.

It is an arithmetic number, because the mean of its divisors is an integer number (25276663877136).

Almost surely, 2^{101100112220021} is an apocalyptic number.

It is an amenable number.

101100112220021 is a deficient number, since it is larger than the sum of its proper divisors (6543288523).

101100112220021 is an equidigital number, since it uses as much as digits as its factorization.

101100112220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6543288522.

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

Adding to 101100112220021 its reverse (120022211001101), we get a palindrome (221122323221122).

The spelling of 101100112220021 in words is "one hundred one trillion, one hundred billion, one hundred twelve million, two hundred twenty thousand, twenty-one".