213223101220 has 12 divisors (see below), whose sum is σ = 447768512604. Its totient is φ = 85289240480.

The previous prime is 213223101209. The next prime is 213223101233. The reversal of 213223101220 is 22101322312.

It can be written as a sum of positive squares in 2 ways, for example, as 31701090304 + 181522010916 = 178048^2 + 426054^2 .

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, 5330577511 + ... + 5330577550.

It is an arithmetic number, because the mean of its divisors is an integer number (37314042717).

Almost surely, 2^213223101220 is an apocalyptic number.

213223101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213223101220 is an abundant number, since it is smaller than the sum of its proper divisors (234545411384).

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

213223101220 is a wasteful number, since it uses less digits than its factorization.

213223101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10661155070 (or 10661155068 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 213223101220 its reverse (22101322312), we get a palindrome (235324423532).

The spelling of 213223101220 in words is "two hundred thirteen billion, two hundred twenty-three million, one hundred one thousand, two hundred twenty".