221101211010112 has 28 divisors (see below), whose sum is σ = 438751516181776. Its totient is φ = 110549647877760.

The previous prime is 221101211010073. The next prime is 221101211010137. The reversal of 221101211010112 is 211010112101122.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7487958 + ... + 22322005.

It is an arithmetic number, because the mean of its divisors is an integer number (15669697006492).

Almost surely, 2^{221101211010112} is an apocalyptic number.

It is an amenable number.

221101211010112 is a deficient number, since it is larger than the sum of its proper divisors (217650305171664).

221101211010112 is a wasteful number, since it uses less digits than its factorization.

221101211010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29925866 (or 29925856 counting only the distinct ones).

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

Adding to 221101211010112 its reverse (211010112101122), we get a palindrome (432111323111234).

The spelling of 221101211010112 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred eleven million, ten thousand, one hundred twelve".