221002101220105 has 32 divisors (see below), whose sum is σ = 266537302416000. Its totient is φ = 175914437755392.

The previous prime is 221002101220091. The next prime is 221002101220163. The reversal of 221002101220105 is 501022101200122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221002101220105 - 2⁹ = 221002101219593 is a prime.

It is a super-2 number, since 2×221002101220105² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1728554221 + ... + 1728682069.

It is an arithmetic number, because the mean of its divisors is an integer number (8329290700500).

Almost surely, 2^{221002101220105} is an apocalyptic number.

It is an amenable number.

221002101220105 is a deficient number, since it is larger than the sum of its proper divisors (45535201195895).

221002101220105 is a wasteful number, since it uses less digits than its factorization.

221002101220105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130393.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 221002101220105 its reverse (501022101200122), we get a palindrome (722024202420227).

The spelling of 221002101220105 in words is "two hundred twenty-one trillion, two billion, one hundred one million, two hundred twenty thousand, one hundred five".