211120200120020 has 96 divisors (see below), whose sum is σ = 445084194915360. Its totient is φ = 84118880747520.

The previous prime is 211120200120013. The next prime is 211120200120029. The reversal of 211120200120020 is 20021002021112.

It can be written as a sum of positive squares in 16 ways, for example, as 121831836760516 + 89288363359504 = 11037746^2 + 9449252^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211120200119977 and 211120200120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120200120029) 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, 20455396460 + ... + 20455406780.

It is an arithmetic number, because the mean of its divisors is an integer number (4636293697035).

Almost surely, 2^{211120200120020} is an apocalyptic number.

211120200120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211120200120020 is an abundant number, since it is smaller than the sum of its proper divisors (233963994795340).

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

211120200120020 is a wasteful number, since it uses less digits than its factorization.

211120200120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13965 (or 13963 counting only the distinct ones).

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

Adding to 211120200120020 its reverse (20021002021112), we get a palindrome (231141202141132).

The spelling of 211120200120020 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred million, one hundred twenty thousand, twenty".