121020012221048 has 16 divisors (see below), whose sum is σ = 226912668825480. Its totient is φ = 60509967200928.

The previous prime is 121020012221047. The next prime is 121020012221111. The reversal of 121020012221048 is 840122210020121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020012221047) by changing a digit.

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, 11655311 + ... + 19439297.

Almost surely, 2^{121020012221048} is an apocalyptic number.

It is an amenable number.

121020012221048 is a deficient number, since it is larger than the sum of its proper divisors (105892656604432).

121020012221048 is a wasteful number, since it uses less digits than its factorization.

121020012221048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9727406 (or 9727402 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

Adding to 121020012221048 its reverse (840122210020121), we get a palindrome (961142222241169).

The spelling of 121020012221048 in words is "one hundred twenty-one trillion, twenty billion, twelve million, two hundred twenty-one thousand, forty-eight".