210213023121020 has 12 divisors (see below), whose sum is σ = 441447348554184. Its totient is φ = 84085209248400.

The previous prime is 210213023120953. The next prime is 210213023121047. The reversal of 210213023121020 is 20121320312012.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 10510651156051 = 210213023121020 / (2 + 1 + 0 + 2 + 1 + 3 + 0 + 2 + 3 + 1 + 2 + 1 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 210213023120983 and 210213023121001.

It is a congruent number.

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, 5255325578006 + ... + 5255325578045.

It is an arithmetic number, because the mean of its divisors is an integer number (36787279046182).

Almost surely, 2^{210213023121020} is an apocalyptic number.

210213023121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210213023121020 is an abundant number, since it is smaller than the sum of its proper divisors (231234325433164).

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

210213023121020 is a wasteful number, since it uses less digits than its factorization.

210213023121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10510651156060 (or 10510651156058 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 210213023121020 its reverse (20121320312012), we get a palindrome (230334343433032).

The spelling of 210213023121020 in words is "two hundred ten trillion, two hundred thirteen billion, twenty-three million, one hundred twenty-one thousand, twenty".