212303121310 has 128 divisors (see below), whose sum is σ = 479828966400.
Its totient is φ = 66006420480.
The previous prime is 212303121299. The next prime is 212303121311. The reversal of 212303121310 is 13121303212.
It is a super-2 number, since 2×2123031213102 (a number of 23 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (19).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (212303121311) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2853361 + ... + 2926819.
It is an arithmetic number, because the mean of its divisors is an integer number (3748663800).
Almost surely, 2212303121310 is an apocalyptic number.
212303121310 is an abundant number, since it is smaller than the sum of its proper divisors (267525845090).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
212303121310 is a wasteful number, since it uses less digits than its factorization.
212303121310 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 73586.
The product of its (nonzero) digits is 216, while the sum is 19.
Adding to 212303121310 its reverse (13121303212), we get a palindrome (225424424522).
The spelling of 212303121310 in words is "two hundred twelve billion, three hundred three million, one hundred twenty-one thousand, three hundred ten".