121021112 has 16 divisors (see below), whose sum is σ = 228228840. Its totient is φ = 60160096.

The previous prime is 121021111. The next prime is 121021151. The reversal of 121021112 is 211120121.

It is a super-2 number, since 2×121021112² = 29292219099433088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121021093 and 121021102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42338 + ... + 45105.

Almost surely, 2^121021112 is an apocalyptic number.

It is an amenable number.

121021112 is a deficient number, since it is larger than the sum of its proper divisors (107207728).

121021112 is a wasteful number, since it uses less digits than its factorization.

121021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87622 (or 87618 counting only the distinct ones).

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

The square root of 121021112 is about 11000.9595945081. The cubic root of 121021112 is about 494.6375089876.

Adding to 121021112 its reverse (211120121), we get a palindrome (332141233).

Subtracting 121021112 from its reverse (211120121), we obtain a palindrome (90099009).

It can be divided in two parts, 1210 and 21112, that added together give a palindrome (22322).

The spelling of 121021112 in words is "one hundred twenty-one million, twenty-one thousand, one hundred twelve".