121202201212 has 12 divisors (see below), whose sum is σ = 212119419960. Its totient is φ = 60596652656.

The previous prime is 121202201173. The next prime is 121202201231. The reversal of 121202201212 is 212102202121.

It is a happy number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1050298 + ... + 1159969.

It is an arithmetic number, because the mean of its divisors is an integer number (17676618330).

Almost surely, 2^121202201212 is an apocalyptic number.

It is an amenable number.

121202201212 is a deficient number, since it is larger than the sum of its proper divisors (90917218748).

121202201212 is a wasteful number, since it uses less digits than its factorization.

121202201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223980 (or 2223978 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121202201212 its reverse (212102202121), we get a palindrome (333304403333).

Subtracting 121202201212 from its reverse (212102202121), we obtain a palindrome (90900000909).

The spelling of 121202201212 in words is "one hundred twenty-one billion, two hundred two million, two hundred one thousand, two hundred twelve".