20121022110020 has 48 divisors (see below), whose sum is σ = 45508411619328. Its totient is φ = 7428656188800.

The previous prime is 20121022110017. The next prime is 20121022110073. The reversal of 20121022110020 is 2001122012102.

It is a junction number, because it is equal to n+sod(n) for n = 20121022109977 and 20121022110004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346604 + ... + 6353123.

It is an arithmetic number, because the mean of its divisors is an integer number (948091908736).

Almost surely, 2^{20121022110020} is an apocalyptic number.

20121022110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121022110020 is an abundant number, since it is smaller than the sum of its proper divisors (25387389509308).

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

20121022110020 is a wasteful number, since it uses less digits than its factorization.

20121022110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711300 (or 6711298 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121022110020 its reverse (2001122012102), we get a palindrome (22122144122122).

The spelling of 20121022110020 in words is "twenty trillion, one hundred twenty-one billion, twenty-two million, one hundred ten thousand, twenty".