221120021102001 has 16 divisors (see below), whose sum is σ = 336956162533248. Its totient is φ = 126350034595200.

The previous prime is 221120021101979. The next prime is 221120021102039. The reversal of 221120021102001 is 100201120021122.

It is not a de Polignac number, because 221120021102001 - 2⁹ = 221120021101489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221120021122001) 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, 176995110 + ... + 178240031.

It is an arithmetic number, because the mean of its divisors is an integer number (21059760158328).

Almost surely, 2^{221120021102001} is an apocalyptic number.

221120021102001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221120021102001 is a deficient number, since it is larger than the sum of its proper divisors (115836141431247).

221120021102001 is a wasteful number, since it uses less digits than its factorization.

221120021102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355264792.

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

Adding to 221120021102001 its reverse (100201120021122), we get a palindrome (321321141123123).

The spelling of 221120021102001 in words is "two hundred twenty-one trillion, one hundred twenty billion, twenty-one million, one hundred two thousand, one".