212210223525330 has 64 divisors (see below), whose sum is σ = 518920387348608. Its totient is φ = 55520991119360.

The previous prime is 212210223525301. The next prime is 212210223525331. The reversal of 212210223525330 is 33525322012212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212210223525291 and 212210223525300.

It is not an unprimeable number, because it can be changed into a prime (212210223525331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136861057 + ... + 138402923.

It is an arithmetic number, because the mean of its divisors is an integer number (8108131052322).

Almost surely, 2^{212210223525330} is an apocalyptic number.

212210223525330 is an abundant number, since it is smaller than the sum of its proper divisors (306710163823278).

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

212210223525330 is a wasteful number, since it uses less digits than its factorization.

212210223525330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628491.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 212210223525330 its reverse (33525322012212), we get a palindrome (245735545537542).

The spelling of 212210223525330 in words is "two hundred twelve trillion, two hundred ten billion, two hundred twenty-three million, five hundred twenty-five thousand, three hundred thirty".