2121331302 has 32 divisors (see below), whose sum is σ = 4866140160.
Its totient is φ = 684299880.
The previous prime is 2121331301. The next prime is 2121331321. The reversal of 2121331302 is 2031331212.
It is a super-3 number, since 3×21213313023 (a number of 29 digits) contains 333 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 (2121331301) 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, 631938 + ... + 635285.
It is an arithmetic number, because the mean of its divisors is an integer number (152066880).
Almost surely, 22121331302 is an apocalyptic number.
2121331302 is an abundant number, since it is smaller than the sum of its proper divisors (2744808858).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2121331302 is a wasteful number, since it uses less digits than its factorization.
2121331302 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1267265 (or 1267259 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 18.
The square root of 2121331302 is about 46057.9124798335.
The cubic root of 2121331302 is about 1284.9005059557.
Adding to 2121331302 its reverse (2031331212), we get a palindrome (4152662514).
The spelling of 2121331302 in words is "two billion, one hundred twenty-one million, three hundred thirty-one thousand, three hundred two".