221111020012001 has 32 divisors (see below), whose sum is σ = 256724359372800. Its totient is φ = 186532842263040.

The previous prime is 221111020011919. The next prime is 221111020012123. The reversal of 221111020012001 is 100210020111122.

221111020012001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221111020012001 - 2¹⁴ = 221111019995617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221111020011001) 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, 70052465 + ... + 73140753.

It is an arithmetic number, because the mean of its divisors is an integer number (8022636230400).

Almost surely, 2^{221111020012001} is an apocalyptic number.

It is an amenable number.

221111020012001 is a deficient number, since it is larger than the sum of its proper divisors (35613339360799).

221111020012001 is a wasteful number, since it uses less digits than its factorization.

221111020012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089069.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221111020012001 its reverse (100210020111122), we get a palindrome (321321040123123).

The spelling of 221111020012001 in words is "two hundred twenty-one trillion, one hundred eleven billion, twenty million, twelve thousand, one".