212123030310 has 64 divisors (see below), whose sum is σ = 565785077760. Its totient is φ = 56553775200.

The previous prime is 212123030297. The next prime is 212123030311. The reversal of 212123030310 is 13030321212.

212123030310 is a `hidden beast` number, since 2 + 121 + 230 + 3 + 0 + 310 = 666.

It is a super-2 number, since 2×212123030310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212123030311) 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, 1186285 + ... + 1353335.

It is an arithmetic number, because the mean of its divisors is an integer number (8840391840).

Almost surely, 2^212123030310 is an apocalyptic number.

212123030310 is an abundant number, since it is smaller than the sum of its proper divisors (353662047450).

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

212123030310 is a wasteful number, since it uses less digits than its factorization.

212123030310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171770 (or 171764 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 212123030310 its reverse (13030321212), we get a palindrome (225153351522).

The spelling of 212123030310 in words is "two hundred twelve billion, one hundred twenty-three million, thirty thousand, three hundred ten".