20001121011102 has 64 divisors (see below), whose sum is σ = 49874303052288. Its totient is φ = 5194952832000.

The previous prime is 20001121011097. The next prime is 20001121011121. The reversal of 20001121011102 is 20111012110002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16681402 + ... + 17840162.

It is an arithmetic number, because the mean of its divisors is an integer number (779285985192).

Almost surely, 2^{20001121011102} is an apocalyptic number.

20001121011102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20001121011102 is an abundant number, since it is smaller than the sum of its proper divisors (29873182041186).

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

20001121011102 is a wasteful number, since it uses less digits than its factorization.

20001121011102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196145.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20001121011102 its reverse (20111012110002), we get a palindrome (40112133121104).

The spelling of 20001121011102 in words is "twenty trillion, one billion, one hundred twenty-one million, eleven thousand, one hundred two".