121022101212 has 12 divisors (see below), whose sum is σ = 282384902856. Its totient is φ = 40340700400.

The previous prime is 121022101199. The next prime is 121022101217. The reversal of 121022101212 is 212101220121.

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

It is a junction number, because it is equal to n+sod(n) for n = 121022101191 and 121022101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022101217) 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, 5042587539 + ... + 5042587562.

It is an arithmetic number, because the mean of its divisors is an integer number (23532075238).

Almost surely, 2^121022101212 is an apocalyptic number.

121022101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121022101212 is an abundant number, since it is smaller than the sum of its proper divisors (161362801644).

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

121022101212 is a wasteful number, since it uses less digits than its factorization.

121022101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10085175108 (or 10085175106 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121022101212 its reverse (212101220121), we get a palindrome (333123321333).

The spelling of 121022101212 in words is "one hundred twenty-one billion, twenty-two million, one hundred one thousand, two hundred twelve".