221100020212101 has 32 divisors (see below), whose sum is σ = 297938476351488. Its totient is φ = 145838712729600.

The previous prime is 221100020212067. The next prime is 221100020212117. The reversal of 221100020212101 is 101212020001122.

It is not a de Polignac number, because 221100020212101 - 2¹¹ = 221100020210053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100020212801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1160272836 + ... + 1160463378.

It is an arithmetic number, because the mean of its divisors is an integer number (9310577385984).

Almost surely, 2^{221100020212101} is an apocalyptic number.

It is an amenable number.

221100020212101 is a deficient number, since it is larger than the sum of its proper divisors (76838456139387).

221100020212101 is a wasteful number, since it uses less digits than its factorization.

221100020212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200921.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221100020212101 its reverse (101212020001122), we get a palindrome (322312040213223).

The spelling of 221100020212101 in words is "two hundred twenty-one trillion, one hundred billion, twenty million, two hundred twelve thousand, one hundred one".