121220221200212 has 24 divisors (see below), whose sum is σ = 212242302941760. Its totient is φ = 60579569336000.

The previous prime is 121220221200193. The next prime is 121220221200217. The reversal of 121220221200212 is 212002122022121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220221200217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79003337 + ... + 80523087.

It is an arithmetic number, because the mean of its divisors is an integer number (8843429289240).

Almost surely, 2^{121220221200212} is an apocalyptic number.

It is an amenable number.

121220221200212 is a deficient number, since it is larger than the sum of its proper divisors (91022081741548).

121220221200212 is a wasteful number, since it uses less digits than its factorization.

121220221200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529791 (or 1529789 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121220221200212 its reverse (212002122022121), we get a palindrome (333222343222333).

The spelling of 121220221200212 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred twenty-one million, two hundred thousand, two hundred twelve".