121121121020110 has 16 divisors (see below), whose sum is σ = 220777739582400. Its totient is φ = 47835176908896.

The previous prime is 121121121020057. The next prime is 121121121020111. The reversal of 121121121020110 is 11020121121121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121121020111) 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 7 ways as a sum of consecutive naturals, for example, 76658936565 + ... + 76658938144.

It is an arithmetic number, because the mean of its divisors is an integer number (13798608723900).

Almost surely, 2^{121121121020110} is an apocalyptic number.

121121121020110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121121121020110 is a deficient number, since it is larger than the sum of its proper divisors (99656618562290).

121121121020110 is a wasteful number, since it uses less digits than its factorization.

121121121020110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153317874795.

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

Adding to 121121121020110 its reverse (11020121121121), we get a palindrome (132141242141231).

The spelling of 121121121020110 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty-one million, twenty thousand, one hundred ten".