12121002211010 has 96 divisors (see below), whose sum is σ = 28708422371712. Its totient is φ = 3579133858560.

The previous prime is 12121002211009. The next prime is 12121002211033. The reversal of 12121002211010 is 1011220012121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 21524747 + ... + 22080686.

It is an arithmetic number, because the mean of its divisors is an integer number (299046066372).

Almost surely, 2^{12121002211010} is an apocalyptic number.

12121002211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121002211010 is an abundant number, since it is smaller than the sum of its proper divisors (16587420160702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12121002211010 is a wasteful number, since it uses less digits than its factorization.

12121002211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43605496 (or 43605477 counting only the distinct ones).

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

Adding to 12121002211010 its reverse (1011220012121), we get a palindrome (13132222223131).

The spelling of 12121002211010 in words is "twelve trillion, one hundred twenty-one billion, two million, two hundred eleven thousand, ten".