20311221001102 has 16 divisors (see below), whose sum is σ = 30475604678832. Its totient is φ = 10152686494080.

The previous prime is 20311221001081. The next prime is 20311221001111. The reversal of 20311221001102 is 20110012211302.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 114832452 + ... + 115009192.

It is an arithmetic number, because the mean of its divisors is an integer number (1904725292427).

Almost surely, 2^{20311221001102} is an apocalyptic number.

20311221001102 is a deficient number, since it is larger than the sum of its proper divisors (10164383677730).

20311221001102 is a wasteful number, since it uses less digits than its factorization.

20311221001102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192963.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20311221001102 its reverse (20110012211302), we get a palindrome (40421233212404).

The spelling of 20311221001102 in words is "twenty trillion, three hundred eleven billion, two hundred twenty-one million, one thousand, one hundred two".