2121001110106 has 16 divisors (see below), whose sum is σ = 3464430127200. Its totient is φ = 970040434608.

The previous prime is 2121001110103. The next prime is 2121001110149. The reversal of 2121001110106 is 6010111001212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121001110106.

It is not an unprimeable number, because it can be changed into a prime (2121001110103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962340600 + ... + 962342803.

It is an arithmetic number, because the mean of its divisors is an integer number (216526882950).

Almost surely, 2^{2121001110106} is an apocalyptic number.

2121001110106 is a deficient number, since it is larger than the sum of its proper divisors (1343429017094).

2121001110106 is a wasteful number, since it uses less digits than its factorization.

2121001110106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924683453.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 2121001110106 its reverse (6010111001212), we get a palindrome (8131112111318).

The spelling of 2121001110106 in words is "two trillion, one hundred twenty-one billion, one million, one hundred ten thousand, one hundred six".