121122021112 has 16 divisors (see below), whose sum is σ = 227416185360. Its totient is φ = 60477705024.

The previous prime is 121122021091. The next prime is 121122021191. The reversal of 121122021112 is 211120221121.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 10407013 + ... + 10418644.

It is an arithmetic number, because the mean of its divisors is an integer number (14213511585).

Almost surely, 2^121122021112 is an apocalyptic number.

It is an amenable number.

121122021112 is a deficient number, since it is larger than the sum of its proper divisors (106294164248).

121122021112 is a wasteful number, since it uses less digits than its factorization.

121122021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20826390 (or 20826386 counting only the distinct ones).

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

Adding to 121122021112 its reverse (211120221121), we get a palindrome (332242242233).

Subtracting 121122021112 from its reverse (211120221121), we obtain a square (89998200009 = 299997²).

The spelling of 121122021112 in words is "one hundred twenty-one billion, one hundred twenty-two million, twenty-one thousand, one hundred twelve".