121110210001 has 32 divisors (see below), whose sum is σ = 142998307200. Its totient is φ = 101381184000.

The previous prime is 121110209999. The next prime is 121110210121. The reversal of 121110210001 is 100012011121.

It is a cyclic number.

It is not a de Polignac number, because 121110210001 - 2¹ = 121110209999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121110210001.

It is not an unprimeable number, because it can be changed into a prime (121110210401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2278791 + ... + 2331331.

It is an arithmetic number, because the mean of its divisors is an integer number (4468697100).

Almost surely, 2^121110210001 is an apocalyptic number.

121110210001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121110210001 is a deficient number, since it is larger than the sum of its proper divisors (21888097199).

121110210001 is a wasteful number, since it uses less digits than its factorization.

121110210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52881.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121110210001 its reverse (100012011121), we get a palindrome (221122221122).

The spelling of 121110210001 in words is "one hundred twenty-one billion, one hundred ten million, two hundred ten thousand, one".