20201121122028 has 96 divisors (see below), whose sum is σ = 58773494588928. Its totient is φ = 5246455449600.

The previous prime is 20201121122027. The next prime is 20201121122033. The reversal of 20201121122028 is 82022112110202.

It is a junction number, because it is equal to n+sod(n) for n = 20201121121989 and 20201121122007.

It is not an unprimeable number, because it can be changed into a prime (20201121122027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7038876 + ... + 9484092.

It is an arithmetic number, because the mean of its divisors is an integer number (612223901968).

Almost surely, 2^{20201121122028} is an apocalyptic number.

20201121122028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20201121122028 is an abundant number, since it is smaller than the sum of its proper divisors (38572373466900).

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

20201121122028 is a wasteful number, since it uses less digits than its factorization.

20201121122028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454183 (or 2454181 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The spelling of 20201121122028 in words is "twenty trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty-two thousand, twenty-eight".