20213123311120 has 20 divisors (see below), whose sum is σ = 46995511698540. Its totient is φ = 8085249324416.

The previous prime is 20213123311037. The next prime is 20213123311177. The reversal of 20213123311120 is 2111332131202.

It can be written as a sum of positive squares in 2 ways, for example, as 8853338407936 + 11359784903184 = 2975456^2 + 3370428^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 20213123311091 and 20213123311100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126332020615 + ... + 126332020774.

It is an arithmetic number, because the mean of its divisors is an integer number (2349775584927).

Almost surely, 2^{20213123311120} is an apocalyptic number.

20213123311120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20213123311120 is an abundant number, since it is smaller than the sum of its proper divisors (26782388387420).

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

20213123311120 is a wasteful number, since it uses less digits than its factorization.

20213123311120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252664041402 (or 252664041396 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20213123311120 its reverse (2111332131202), we get a palindrome (22324455442322).

The spelling of 20213123311120 in words is "twenty trillion, two hundred thirteen billion, one hundred twenty-three million, three hundred eleven thousand, one hundred twenty".