213013300021220 has 24 divisors (see below), whose sum is σ = 447334959657600. Its totient is φ = 85203981034592.

The previous prime is 213013300021199. The next prime is 213013300021229. The reversal of 213013300021220 is 22120003310312.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 213013300021192 and 213013300021201.

It is not an unprimeable number, because it can be changed into a prime (213013300021229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82380860 + ... + 84927219.

It is an arithmetic number, because the mean of its divisors is an integer number (18638956652400).

Almost surely, 2^{213013300021220} is an apocalyptic number.

213013300021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213013300021220 is an abundant number, since it is smaller than the sum of its proper divisors (234321659636380).

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

213013300021220 is a wasteful number, since it uses less digits than its factorization.

213013300021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167371747 (or 167371745 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 213013300021220 its reverse (22120003310312), we get a palindrome (235133303331532).

The spelling of 213013300021220 in words is "two hundred thirteen trillion, thirteen billion, three hundred million, twenty-one thousand, two hundred twenty".