20020120211000 has 128 divisors (see below), whose sum is σ = 57657946469760. Its totient is φ = 6336038016000.

The previous prime is 20020120210967. The next prime is 20020120211009. The reversal of 20020120211000 is 11202102002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020120211009) 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, 109909661 + ... + 110091660.

It is an arithmetic number, because the mean of its divisors is an integer number (450452706795).

Almost surely, 2^{20020120211000} is an apocalyptic number.

20020120211000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020120211000 is an abundant number, since it is smaller than the sum of its proper divisors (37637826258760).

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

20020120211000 is a wasteful number, since it uses less digits than its factorization.

20020120211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220001362 (or 220001348 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20020120211000 its reverse (11202102002), we get a palindrome (20031322313002).

The spelling of 20020120211000 in words is "twenty trillion, twenty billion, one hundred twenty million, two hundred eleven thousand".