20200111092820 has 24 divisors (see below), whose sum is σ = 42423651220104. Its totient is φ = 8079393403776.

The previous prime is 20200111092803. The next prime is 20200111092869. The reversal of 20200111092820 is 2829011100202.

It can be written as a sum of positive squares in 4 ways, for example, as 5249469133584 + 14950641959236 = 2291172^2 + 3866606^2 .

It is a super-2 number, since 2×20200111092820² (a number of 27 digits) contains 22 as substring.

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, 40435119 + ... + 40931638.

It is an arithmetic number, because the mean of its divisors is an integer number (1767652134171).

Almost surely, 2^{20200111092820} is an apocalyptic number.

20200111092820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200111092820 is an abundant number, since it is smaller than the sum of its proper divisors (22223540127284).

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

20200111092820 is a wasteful number, since it uses less digits than its factorization.

20200111092820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81379179 (or 81379177 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 20200111092820 in words is "twenty trillion, two hundred billion, one hundred eleven million, ninety-two thousand, eight hundred twenty".