213013101220 has 12 divisors (see below), whose sum is σ = 447327512604. Its totient is φ = 85205240480.

The previous prime is 213013101211. The next prime is 213013101277. The reversal of 213013101220 is 22101310312.

It can be written as a sum of positive squares in 2 ways, for example, as 120814637056 + 92198464164 = 347584^2 + 303642^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213013101194 and 213013101203.

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, 5325327511 + ... + 5325327550.

It is an arithmetic number, because the mean of its divisors is an integer number (37277292717).

Almost surely, 2^213013101220 is an apocalyptic number.

213013101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213013101220 is an abundant number, since it is smaller than the sum of its proper divisors (234314411384).

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

213013101220 is a wasteful number, since it uses less digits than its factorization.

213013101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10650655070 (or 10650655068 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 213013101220 its reverse (22101310312), we get a palindrome (235114411532).

The spelling of 213013101220 in words is "two hundred thirteen billion, thirteen million, one hundred one thousand, two hundred twenty".