221012022111 has 16 divisors (see below), whose sum is σ = 312531047424. Its totient is φ = 138445732224.

The previous prime is 221012022031. The next prime is 221012022137. The reversal of 221012022111 is 111220210122.

It is not a de Polignac number, because 221012022111 - 2¹³ = 221012013919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012022611) 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, 3538705 + ... + 3600618.

It is an arithmetic number, because the mean of its divisors is an integer number (19533190464).

Almost surely, 2^221012022111 is an apocalyptic number.

221012022111 is a deficient number, since it is larger than the sum of its proper divisors (91519025313).

221012022111 is a wasteful number, since it uses less digits than its factorization.

221012022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7139950.

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

Adding to 221012022111 its reverse (111220210122), we get a palindrome (332232232233).

The spelling of 221012022111 in words is "two hundred twenty-one billion, twelve million, twenty-two thousand, one hundred eleven".