101221112 has 16 divisors (see below), whose sum is σ = 189912840. Its totient is φ = 50577696.

The previous prime is 101221103. The next prime is 101221147. The reversal of 101221112 is 211122101.

It is a junction number, because it is equal to n+sod(n) for n = 101221093 and 101221102.

It is a congruent number.

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, 13343 + ... + 19505.

Almost surely, 2^101221112 is an apocalyptic number.

It is an amenable number.

101221112 is a deficient number, since it is larger than the sum of its proper divisors (88691728).

101221112 is a wasteful number, since it uses less digits than its factorization.

101221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8222 (or 8218 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 101221112 is about 10060.8703400849. The cubic root of 101221112 is about 466.0405448952.

Adding to 101221112 its reverse (211122101), we get a palindrome (312343213).

The spelling of 101221112 in words is "one hundred one million, two hundred twenty-one thousand, one hundred twelve".