213211421330 has 24 divisors (see below), whose sum is σ = 387778018788. Its totient is φ = 84405308928.

The previous prime is 213211421327. The next prime is 213211421347. The reversal of 213211421330 is 33124112312.

It can be written as a sum of positive squares in 6 ways, for example, as 73439374009 + 139772047321 = 270997^2 + 373861^2 .

It is a super-2 number, since 2×213211421330² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213211421296 and 213211421305.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1038929 + ... + 1227108.

Almost surely, 2^213211421330 is an apocalyptic number.

213211421330 is a deficient number, since it is larger than the sum of its proper divisors (174566597458).

213211421330 is an equidigital number, since it uses as much as digits as its factorization.

213211421330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266238 (or 2266141 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 213211421330 its reverse (33124112312), we get a palindrome (246335533642).

The spelling of 213211421330 in words is "two hundred thirteen billion, two hundred eleven million, four hundred twenty-one thousand, three hundred thirty".