213020121120 has 192 divisors, whose sum is σ = 711151249536. Its totient is φ = 53413724160.

The previous prime is 213020121043. The next prime is 213020121121. The reversal of 213020121120 is 21121020312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 213020121120.

It is not an unprimeable number, because it can be changed into a prime (213020121121) 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, 9103035 + ... + 9126405.

It is an arithmetic number, because the mean of its divisors is an integer number (3703912758).

Almost surely, 2^213020121120 is an apocalyptic number.

213020121120 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 213020121120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355575624768).

213020121120 is an abundant number, since it is smaller than the sum of its proper divisors (498131128416).

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

213020121120 is a wasteful number, since it uses less digits than its factorization.

213020121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24523 (or 24515 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 213020121120 its reverse (21121020312), we get a palindrome (234141141432).

The spelling of 213020121120 in words is "two hundred thirteen billion, twenty million, one hundred twenty-one thousand, one hundred twenty".