213122030 has 32 divisors (see below), whose sum is σ = 443115360. Its totient is φ = 72939520.

The previous prime is 213122029. The next prime is 213122033. The reversal of 213122030 is 30221312.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 213121996 and 213122014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213122033) 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, 55115 + ... + 58854.

It is an arithmetic number, because the mean of its divisors is an integer number (13847355).

Almost surely, 2^213122030 is an apocalyptic number.

213122030 is an abundant number, since it is smaller than the sum of its proper divisors (229993330).

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

213122030 is a wasteful number, since it uses less digits than its factorization.

213122030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114004.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 213122030 is about 14598.6995996219. The cubic root of 213122030 is about 597.3232894212.

Adding to 213122030 its reverse (30221312), we get a palindrome (243343342).

The spelling of 213122030 in words is "two hundred thirteen million, one hundred twenty-two thousand, thirty".