20111243313102 has 32 divisors (see below), whose sum is σ = 40638487048704. Its totient is φ = 6634710033600.

The previous prime is 20111243313089. The next prime is 20111243313107. The reversal of 20111243313102 is 20131334211102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111243313107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36685974 + ... + 37230137.

It is an arithmetic number, because the mean of its divisors is an integer number (1269952720272).

Almost surely, 2^{20111243313102} is an apocalyptic number.

20111243313102 is an abundant number, since it is smaller than the sum of its proper divisors (20527243735602).

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

20111243313102 is a wasteful number, since it uses less digits than its factorization.

20111243313102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73916584.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 20111243313102 its reverse (20131334211102), we get a palindrome (40242577524204).

The spelling of 20111243313102 in words is "twenty trillion, one hundred eleven billion, two hundred forty-three million, three hundred thirteen thousand, one hundred two".