212331012221330 has 64 divisors (see below), whose sum is σ = 398916315721728. Its totient is φ = 81295122455040.

The previous prime is 212331012221261. The next prime is 212331012221333. The reversal of 212331012221330 is 33122210133212.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212331012221330.

It is not an unprimeable number, because it can be changed into a prime (212331012221333) 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, 878270927 + ... + 878512653.

It is an arithmetic number, because the mean of its divisors is an integer number (6233067433152).

Almost surely, 2^{212331012221330} is an apocalyptic number.

212331012221330 is a deficient number, since it is larger than the sum of its proper divisors (186585303500398).

212331012221330 is a wasteful number, since it uses less digits than its factorization.

212331012221330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282251.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 212331012221330 its reverse (33122210133212), we get a palindrome (245453222354542).

The spelling of 212331012221330 in words is "two hundred twelve trillion, three hundred thirty-one billion, twelve million, two hundred twenty-one thousand, three hundred thirty".