121210112 has 18 divisors (see below), whose sum is σ = 241947258. Its totient is φ = 60604928.

The previous prime is 121210081. The next prime is 121210157. The reversal of 121210112 is 211012121.

It can be written as a sum of positive squares in only one way, i.e., 62473216 + 58736896 = 7904^2 + 7664^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121210093 and 121210102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236483 + ... + 236994.

Almost surely, 2^121210112 is an apocalyptic number.

It is an amenable number.

121210112 is a deficient number, since it is larger than the sum of its proper divisors (120737146).

121210112 is an frugal number, since it uses more digits than its factorization.

121210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473493 (or 473479 counting only the distinct ones).

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

The square root of 121210112 is about 11009.5464030086. The cubic root of 121210112 is about 494.8948686706.

Adding to 121210112 its reverse (211012121), we get a palindrome (332222233).

The spelling of 121210112 in words is "one hundred twenty-one million, two hundred ten thousand, one hundred twelve".