20210213120 has 72 divisors (see below), whose sum is σ = 48889393560. Its totient is φ = 8003993600.

The previous prime is 20210213099. The next prime is 20210213143. The reversal of 20210213120 is 2131201202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6687314176 + 13522898944 = 81776^2 + 116288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20210213095 and 20210213104.

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, 51116 + ... + 207444.

It is an arithmetic number, because the mean of its divisors is an integer number (679019355).

Almost surely, 2^20210213120 is an apocalyptic number.

20210213120 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 20210213120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24444696780).

20210213120 is an abundant number, since it is smaller than the sum of its proper divisors (28679180440).

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

20210213120 is a wasteful number, since it uses less digits than its factorization.

20210213120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156451 (or 156437 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20210213120 its reverse (2131201202), we get a palindrome (22341414322).

The spelling of 20210213120 in words is "twenty billion, two hundred ten million, two hundred thirteen thousand, one hundred twenty".