20311121034102 has 16 divisors (see below), whose sum is σ = 42388426506240. Its totient is φ = 6476009605032.

The previous prime is 20311121034089. The next prime is 20311121034107. The reversal of 20311121034102 is 20143012111302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311121034107) 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, 73591018102 + ... + 73591018377.

It is an arithmetic number, because the mean of its divisors is an integer number (2649276656640).

Almost surely, 2^{20311121034102} is an apocalyptic number.

20311121034102 is an abundant number, since it is smaller than the sum of its proper divisors (22077305472138).

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

20311121034102 is a wasteful number, since it uses less digits than its factorization.

20311121034102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147182036507.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20311121034102 its reverse (20143012111302), we get a palindrome (40454133145404).

The spelling of 20311121034102 in words is "twenty trillion, three hundred eleven billion, one hundred twenty-one million, thirty-four thousand, one hundred two".