20111022020020 has 24 divisors (see below), whose sum is σ = 44069369992704. Its totient is φ = 7694651903136.

The previous prime is 20111022020003. The next prime is 20111022020041. The reversal of 20111022020020 is 2002022011102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21859806084 + ... + 21859807003.

It is an arithmetic number, because the mean of its divisors is an integer number (1836223749696).

Almost surely, 2^{20111022020020} is an apocalyptic number.

20111022020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111022020020 is an abundant number, since it is smaller than the sum of its proper divisors (23958347972684).

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

20111022020020 is a wasteful number, since it uses less digits than its factorization.

20111022020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43719613119 (or 43719613117 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20111022020020 its reverse (2002022011102), we get a palindrome (22113044031122).

The spelling of 20111022020020 in words is "twenty trillion, one hundred eleven billion, twenty-two million, twenty thousand, twenty".