121221010210010 has 32 divisors (see below), whose sum is σ = 222816817396800. Its totient is φ = 47468780087040.

The previous prime is 121221010209997. The next prime is 121221010210073. The reversal of 121221010210010 is 10012010122121.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426122000 + ... + 426406379.

It is an arithmetic number, because the mean of its divisors is an integer number (6963025543650).

Almost surely, 2^{121221010210010} is an apocalyptic number.

121221010210010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121221010210010 is a deficient number, since it is larger than the sum of its proper divisors (101595807186790).

121221010210010 is a wasteful number, since it uses less digits than its factorization.

121221010210010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852528686.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121221010210010 its reverse (10012010122121), we get a palindrome (131233020332131).

The spelling of 121221010210010 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, ten million, two hundred ten thousand, ten".