121022021212 has 12 divisors (see below), whose sum is σ = 211791227256. Its totient is φ = 60510242000.

The previous prime is 121022021209. The next prime is 121022021249. The reversal of 121022021212 is 212120220121.

It is a happy number.

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, 305103 + ... + 578905.

It is an arithmetic number, because the mean of its divisors is an integer number (17649268938).

Almost surely, 2^121022021212 is an apocalyptic number.

It is an amenable number.

121022021212 is a deficient number, since it is larger than the sum of its proper divisors (90769206044).

121022021212 is a wasteful number, since it uses less digits than its factorization.

121022021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384308 (or 384306 counting only the distinct ones).

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

Adding to 121022021212 its reverse (212120220121), we get a palindrome (333142241333).

The spelling of 121022021212 in words is "one hundred twenty-one billion, twenty-two million, twenty-one thousand, two hundred twelve".