221002101002001 has 32 divisors (see below), whose sum is σ = 355165431810048. Its totient is φ = 120580856464640.

The previous prime is 221002101001963. The next prime is 221002101002027. The reversal of 221002101002001 is 100200101200122.

It is not a de Polignac number, because 221002101002001 - 2²² = 221002096807697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221002101052001) 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, 8563968381 + ... + 8563994186.

It is an arithmetic number, because the mean of its divisors is an integer number (11098919744064).

Almost surely, 2^{221002101002001} is an apocalyptic number.

It is an amenable number.

221002101002001 is a deficient number, since it is larger than the sum of its proper divisors (134163330808047).

221002101002001 is a wasteful number, since it uses less digits than its factorization.

221002101002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17127962621.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221002101002001 its reverse (100200101200122), we get a palindrome (321202202202123).

The spelling of 221002101002001 in words is "two hundred twenty-one trillion, two billion, one hundred one million, two thousand, one".