121021011110 has 32 divisors (see below), whose sum is σ = 225520301952. Its totient is φ = 46729405440.

The previous prime is 121021010993. The next prime is 121021011127. The reversal of 121021011110 is 11110120121.

It is a junction number, because it is equal to n+sod(n) for n = 121021011091 and 121021011100.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1729331 + ... + 1797950.

It is an arithmetic number, because the mean of its divisors is an integer number (7047509436).

Almost surely, 2^121021011110 is an apocalyptic number.

121021011110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021011110 is a deficient number, since it is larger than the sum of its proper divisors (104499290842).

121021011110 is a wasteful number, since it uses less digits than its factorization.

121021011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527408.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121021011110 its reverse (11110120121), we get a palindrome (132131131231).

The spelling of 121021011110 in words is "one hundred twenty-one billion, twenty-one million, eleven thousand, one hundred ten".