121220202220212 has 12 divisors (see below), whose sum is σ = 282847138513856. Its totient is φ = 40406734073400.

The previous prime is 121220202220207. The next prime is 121220202220213. The reversal of 121220202220212 is 212022202022121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220202220213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5050841759164 + ... + 5050841759187.

Almost surely, 2^{121220202220212} is an apocalyptic number.

121220202220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121220202220212 is an abundant number, since it is smaller than the sum of its proper divisors (161626936293644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121220202220212 is a wasteful number, since it uses less digits than its factorization.

121220202220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10101683518358 (or 10101683518356 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 121220202220212 its reverse (212022202022121), we get a palindrome (333242404242333).

The spelling of 121220202220212 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred two million, two hundred twenty thousand, two hundred twelve".