221102201012021 has 8 divisors (see below), whose sum is σ = 252883960357824. Its totient is φ = 189369374323680.

The previous prime is 221102201012003. The next prime is 221102201012023. The reversal of 221102201012021 is 120210102201122.

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 221102201012021 - 2¹⁰ = 221102201010997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102201012023) 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, 12233154680 + ... + 12233172753.

It is an arithmetic number, because the mean of its divisors is an integer number (31610495044728).

Almost surely, 2^{221102201012021} is an apocalyptic number.

It is an amenable number.

221102201012021 is a deficient number, since it is larger than the sum of its proper divisors (31781759345803).

221102201012021 is a wasteful number, since it uses less digits than its factorization.

221102201012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24466328731.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221102201012021 its reverse (120210102201122), we get a palindrome (341312303213143).

The spelling of 221102201012021 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred one million, twelve thousand, twenty-one".