2120611202520 has 256 divisors, whose sum is σ = 6509147299200. Its totient is φ = 552581529600.

The previous prime is 2120611202509. The next prime is 2120611202527. The reversal of 2120611202520 is 252021160212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120611202527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 457321642 + ... + 457326278.

Almost surely, 2^{2120611202520} is an apocalyptic number.

2120611202520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120611202520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3254573649600).

2120611202520 is an abundant number, since it is smaller than the sum of its proper divisors (4388536096680).

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

2120611202520 is a wasteful number, since it uses less digits than its factorization.

2120611202520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5238 (or 5234 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 2120611202520 its reverse (252021160212), we get a palindrome (2372632362732).

The spelling of 2120611202520 in words is "two trillion, one hundred twenty billion, six hundred eleven million, two hundred two thousand, five hundred twenty".