21112220010101 has 8 divisors (see below), whose sum is σ = 23031675535008. Its totient is φ = 19192791618000.

The previous prime is 21112220010083. The next prime is 21112220010157. The reversal of 21112220010101 is 10101002221112.

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

It is a de Polignac number, because none of the positive numbers 2^k-21112220010101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112220010191) 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, 5138915 + ... + 8284496.

It is an arithmetic number, because the mean of its divisors is an integer number (2878959441876).

Almost surely, 2^{21112220010101} is an apocalyptic number.

It is an amenable number.

21112220010101 is a deficient number, since it is larger than the sum of its proper divisors (1919455524907).

21112220010101 is a wasteful number, since it uses less digits than its factorization.

21112220010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13566403.

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

Adding to 21112220010101 its reverse (10101002221112), we get a palindrome (31213222231213).

The spelling of 21112220010101 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty million, ten thousand, one hundred one".