221100021112101 has 16 divisors (see below), whose sum is σ = 302775759233664. Its totient is φ = 143412363342144.

The previous prime is 221100021112079. The next prime is 221100021112111. The reversal of 221100021112101 is 101211120001122.

It is a happy number.

It is not a de Polignac number, because 221100021112101 - 2¹³ = 221100021103909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100021112111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22712625 + ... + 30952598.

It is an arithmetic number, because the mean of its divisors is an integer number (18923484952104).

Almost surely, 2^{221100021112101} is an apocalyptic number.

It is an amenable number.

221100021112101 is a deficient number, since it is larger than the sum of its proper divisors (81675738121563).

221100021112101 is a wasteful number, since it uses less digits than its factorization.

221100021112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53702380.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221100021112101 its reverse (101211120001122), we get a palindrome (322311141113223).

It can be divided in two parts, 221100021 and 112101, that added together give a palindrome (221212122).

The spelling of 221100021112101 in words is "two hundred twenty-one trillion, one hundred billion, twenty-one million, one hundred twelve thousand, one hundred one".