221111122002101 has 8 divisors (see below), whose sum is σ = 223179776408160. Its totient is φ = 219043196905392.

The previous prime is 221111122002097. The next prime is 221111122002119. The reversal of 221111122002101 is 101200221111122.

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

It is a cyclic number.

It is not a de Polignac number, because 221111122002101 - 2² = 221111122002097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221111122002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221111122002131) 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, 181718135 + ... + 182930868.

It is an arithmetic number, because the mean of its divisors is an integer number (27897472051020).

Almost surely, 2^{221111122002101} is an apocalyptic number.

It is an amenable number.

221111122002101 is a deficient number, since it is larger than the sum of its proper divisors (2068654406059).

221111122002101 is a wasteful number, since it uses less digits than its factorization.

221111122002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364654675.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221111122002101 its reverse (101200221111122), we get a palindrome (322311343113223).

The spelling of 221111122002101 in words is "two hundred twenty-one trillion, one hundred eleven billion, one hundred twenty-two million, two thousand, one hundred one".