213203320020 has 48 divisors (see below), whose sum is σ = 663299219520. Its totient is φ = 56854218528.

The previous prime is 213203320013. The next prime is 213203320027. The reversal of 213203320020 is 20023302312.

It is a happy number.

213203320020 is a `hidden beast` number, since 2 + 1 + 320 + 3 + 320 + 0 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (213203320013) and next prime (213203320027).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 213203319975 and 213203320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213203320027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197409942 + ... + 197411021.

It is an arithmetic number, because the mean of its divisors is an integer number (13818733740).

Almost surely, 2^213203320020 is an apocalyptic number.

213203320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213203320020 is an abundant number, since it is smaller than the sum of its proper divisors (450095899500).

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

213203320020 is a wasteful number, since it uses less digits than its factorization.

213203320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394820981 (or 394820973 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 213203320020 its reverse (20023302312), we get a palindrome (233226622332).

The spelling of 213203320020 in words is "two hundred thirteen billion, two hundred three million, three hundred twenty thousand, twenty".