121022111212 has 6 divisors (see below), whose sum is σ = 211788694628. Its totient is φ = 60511055604.

The previous prime is 121022111191. The next prime is 121022111281. The reversal of 121022111212 is 212111220121.

It is a super-3 number, since 3×121022111212³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15127763898 + ... + 15127763905.

Almost surely, 2^121022111212 is an apocalyptic number.

It is an amenable number.

121022111212 is a deficient number, since it is larger than the sum of its proper divisors (90766583416).

121022111212 is a wasteful number, since it uses less digits than its factorization.

121022111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30255527807 (or 30255527805 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121022111212 its reverse (212111220121), we get a palindrome (333133331333).

The spelling of 121022111212 in words is "one hundred twenty-one billion, twenty-two million, one hundred eleven thousand, two hundred twelve".