221200112120001 has 24 divisors (see below), whose sum is σ = 346233465167040. Its totient is φ = 125240430444192.

The previous prime is 221200112119867. The next prime is 221200112120003. The reversal of 221200112120001 is 100021211002122.

It is not a de Polignac number, because 221200112120001 - 2¹⁴ = 221200112103617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221200112120003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6902565021 + ... + 6902597066.

It is an arithmetic number, because the mean of its divisors is an integer number (14426394381960).

Almost surely, 2^{221200112120001} is an apocalyptic number.

221200112120001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221200112120001 is a deficient number, since it is larger than the sum of its proper divisors (125033353047039).

221200112120001 is a wasteful number, since it uses less digits than its factorization.

221200112120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13805162213 (or 13805162206 counting only the distinct ones).

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

Adding to 221200112120001 its reverse (100021211002122), we get a palindrome (321221323122123).

The spelling of 221200112120001 in words is "two hundred twenty-one trillion, two hundred billion, one hundred twelve million, one hundred twenty thousand, one".