20200121111000 has 64 divisors (see below), whose sum is σ = 49756087836000. Its totient is φ = 7654782729600.

The previous prime is 20200121110997. The next prime is 20200121111017. The reversal of 20200121111000 is 11112100202.

It is a congruent number.

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, 531563135 + ... + 531601134.

Almost surely, 2^{20200121111000} is an apocalyptic number.

20200121111000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200121111000 is an abundant number, since it is smaller than the sum of its proper divisors (29555966725000).

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

20200121111000 is a wasteful number, since it uses less digits than its factorization.

20200121111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063164309 (or 1063164295 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20200121111000 its reverse (11112100202), we get a palindrome (20211233211202).

The spelling of 20200121111000 in words is "twenty trillion, two hundred billion, one hundred twenty-one million, one hundred eleven thousand".