221111020102012 has 48 divisors (see below), whose sum is σ = 414717782425632. Its totient is φ = 102784096972800.

The previous prime is 221111020102009. The next prime is 221111020102019. The reversal of 221111020102012 is 210201020111122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221111020102019) 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, 34202118 + ... + 40149805.

It is an arithmetic number, because the mean of its divisors is an integer number (8639953800534).

Almost surely, 2^{221111020102012} is an apocalyptic number.

It is an amenable number.

221111020102012 is a deficient number, since it is larger than the sum of its proper divisors (193606762323620).

221111020102012 is a wasteful number, since it uses less digits than its factorization.

221111020102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74352478 (or 74352476 counting only the distinct ones).

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

Adding to 221111020102012 its reverse (210201020111122), we get a palindrome (431312040213134).

The spelling of 221111020102012 in words is "two hundred twenty-one trillion, one hundred eleven billion, twenty million, one hundred two thousand, twelve".