221012011122 has 32 divisors (see below), whose sum is σ = 507787792512. Its totient is φ = 62819103744.

The previous prime is 221012011097. The next prime is 221012011123. The reversal of 221012011122 is 221110210122.

It is not an unprimeable number, because it can be changed into a prime (221012011123) 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, 13624513 + ... + 13640724.

It is an arithmetic number, because the mean of its divisors is an integer number (15868368516).

Almost surely, 2^221012011122 is an apocalyptic number.

221012011122 is an abundant number, since it is smaller than the sum of its proper divisors (286775781390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221012011122 is a wasteful number, since it uses less digits than its factorization.

221012011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27265442.

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

Adding to 221012011122 its reverse (221110210122), we get a palindrome (442122221244).

The spelling of 221012011122 in words is "two hundred twenty-one billion, twelve million, eleven thousand, one hundred twenty-two".