121202211212 has 96 divisors (see below), whose sum is σ = 238204774080. Its totient is φ = 53623848960.

The previous prime is 121202211203. The next prime is 121202211223. The reversal of 121202211212 is 212112202121.

121202211212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137573012 + ... + 137573892.

It is an arithmetic number, because the mean of its divisors is an integer number (2481299730).

Almost surely, 2^121202211212 is an apocalyptic number.

It is an amenable number.

121202211212 is a deficient number, since it is larger than the sum of its proper divisors (117002562868).

121202211212 is a wasteful number, since it uses less digits than its factorization.

121202211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1609 counting only the distinct ones).

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

Adding to 121202211212 its reverse (212112202121), we get a palindrome (333314413333).

Subtracting 121202211212 from its reverse (212112202121), we obtain a palindrome (90909990909).

The spelling of 121202211212 in words is "one hundred twenty-one billion, two hundred two million, two hundred eleven thousand, two hundred twelve".