121202212112 has 20 divisors (see below), whose sum is σ = 237467820060. Its totient is φ = 59920194048.

The previous prime is 121202212073. The next prime is 121202212121. The reversal of 121202212112 is 211212202121.

It can be written as a sum of positive squares in 2 ways, for example, as 32340986896 + 88861225216 = 179836^2 + 298096^2 .

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, 42555533 + ... + 42558380.

It is an arithmetic number, because the mean of its divisors is an integer number (11873391003).

Almost surely, 2^121202212112 is an apocalyptic number.

It is an amenable number.

121202212112 is a deficient number, since it is larger than the sum of its proper divisors (116265607948).

121202212112 is an equidigital number, since it uses as much as digits as its factorization.

121202212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85114010 (or 85114004 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121202212112 its reverse (211212202121), we get a palindrome (332414414233).

Subtracting 121202212112 from its reverse (211212202121), we obtain a palindrome (90009990009).

The spelling of 121202212112 in words is "one hundred twenty-one billion, two hundred two million, two hundred twelve thousand, one hundred twelve".