121011020242 has 24 divisors (see below), whose sum is σ = 211164852096. Its totient is φ = 51858680328.

The previous prime is 121011020231. The next prime is 121011020243. The reversal of 121011020242 is 242020110121.

It is not an unprimeable number, because it can be changed into a prime (121011020243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2292883 + ... + 2345065.

It is an arithmetic number, because the mean of its divisors is an integer number (8798535504).

Almost surely, 2^121011020242 is an apocalyptic number.

121011020242 is a deficient number, since it is larger than the sum of its proper divisors (90153831854).

121011020242 is a wasteful number, since it uses less digits than its factorization.

121011020242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75862 (or 75855 counting only the distinct ones).

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

Adding to 121011020242 its reverse (242020110121), we get a palindrome (363031130363).

The spelling of 121011020242 in words is "one hundred twenty-one billion, eleven million, twenty thousand, two hundred forty-two".