121220210201212 has 12 divisors (see below), whose sum is σ = 212804564598360. Its totient is φ = 60418906030256.

The previous prime is 121220210201177. The next prime is 121220210201287. The reversal of 121220210201212 is 212102012022121.

It is a super-2 number, since 2×121220210201212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121220210201212.

It is a congruent number.

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, 47799766162 + ... + 47799768697.

It is an arithmetic number, because the mean of its divisors is an integer number (17733713716530).

Almost surely, 2^{121220210201212} is an apocalyptic number.

It is an amenable number.

121220210201212 is a deficient number, since it is larger than the sum of its proper divisors (91584354397148).

121220210201212 is a wasteful number, since it uses less digits than its factorization.

121220210201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95599535180 (or 95599535178 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121220210201212 its reverse (212102012022121), we get a palindrome (333322222223333).

The spelling of 121220210201212 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred ten million, two hundred one thousand, two hundred twelve".