121121100021212 has 6 divisors (see below), whose sum is σ = 211961925037128. Its totient is φ = 60560550010604.

The previous prime is 121121100021161. The next prime is 121121100021307. The reversal of 121121100021212 is 212120001121121.

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 as a sum of consecutive naturals, namely, 15140137502648 + ... + 15140137502655.

It is an arithmetic number, because the mean of its divisors is an integer number (35326987506188).

Almost surely, 2^{121121100021212} is an apocalyptic number.

It is an amenable number.

121121100021212 is a deficient number, since it is larger than the sum of its proper divisors (90840825015916).

121121100021212 is a wasteful number, since it uses less digits than its factorization.

121121100021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30280275005307 (or 30280275005305 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121121100021212 its reverse (212120001121121), we get a palindrome (333241101142333).

The spelling of 121121100021212 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred million, twenty-one thousand, two hundred twelve".