213012202122220 has 48 divisors (see below), whose sum is σ = 450379847332800. Its totient is φ = 84623256271616.

The previous prime is 213012202122199. The next prime is 213012202122229. The reversal of 213012202122220 is 22221202210312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 213012202122191 and 213012202122200.

It is not an unprimeable number, because it can be changed into a prime (213012202122229) 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, 21690114 + ... + 29941366.

It is an arithmetic number, because the mean of its divisors is an integer number (9382913486100).

Almost surely, 2^{213012202122220} is an apocalyptic number.

213012202122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213012202122220 is an abundant number, since it is smaller than the sum of its proper divisors (237367645210580).

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

213012202122220 is a wasteful number, since it uses less digits than its factorization.

213012202122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8260074 (or 8260072 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 213012202122220 its reverse (22221202210312), we get a palindrome (235233404332532).

The spelling of 213012202122220 in words is "two hundred thirteen trillion, twelve billion, two hundred two million, one hundred twenty-two thousand, two hundred twenty".