213103234021020 has 96 divisors (see below), whose sum is σ = 681934483388928. Its totient is φ = 48709015310592.

The previous prime is 213103234020979. The next prime is 213103234021063. The reversal of 213103234021020 is 20120432301312.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 71997639 + ... + 74899041.

It is an arithmetic number, because the mean of its divisors is an integer number (7103484201968).

Almost surely, 2^{213103234021020} is an apocalyptic number.

213103234021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213103234021020 is an abundant number, since it is smaller than the sum of its proper divisors (468831249367908).

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

213103234021020 is a wasteful number, since it uses less digits than its factorization.

213103234021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076299 (or 3076297 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 213103234021020 its reverse (20120432301312), we get a palindrome (233223666322332).

The spelling of 213103234021020 in words is "two hundred thirteen trillion, one hundred three billion, two hundred thirty-four million, twenty-one thousand, twenty".