221010022012111 has 4 divisors (see below), whose sum is σ = 222120625138000. Its totient is φ = 219899418886224.

The previous prime is 221010022012079. The next prime is 221010022012127. The reversal of 221010022012111 is 111210220010122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221010022012111 - 2⁵ = 221010022012079 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 (221010022012181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555301562646 + ... + 555301563043.

It is an arithmetic number, because the mean of its divisors is an integer number (55530156284500).

Almost surely, 2^{221010022012111} is an apocalyptic number.

221010022012111 is a deficient number, since it is larger than the sum of its proper divisors (1110603125889).

221010022012111 is a wasteful number, since it uses less digits than its factorization.

221010022012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110603125888.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221010022012111 its reverse (111210220010122), we get a palindrome (332220242022233).

The spelling of 221010022012111 in words is "two hundred twenty-one trillion, ten billion, twenty-two million, twelve thousand, one hundred eleven".