21121130321362 has 8 divisors (see below), whose sum is σ = 31681908175500. Its totient is φ = 10560494262864.

The previous prime is 21121130321323. The next prime is 21121130321381. The reversal of 21121130321362 is 26312303112112.

It can be written as a sum of positive squares in 2 ways, for example, as 17742889997361 + 3378240324001 = 4212231^2 + 1837999^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21121130321362² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21121130321362.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35075737 + ... + 35672812.

Almost surely, 2^{21121130321362} is an apocalyptic number.

21121130321362 is a deficient number, since it is larger than the sum of its proper divisors (10560777854138).

21121130321362 is a wasteful number, since it uses less digits than its factorization.

21121130321362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70897820.

The product of its (nonzero) digits is 2592, while the sum is 28.

Adding to 21121130321362 its reverse (26312303112112), we get a palindrome (47433433433474).

The spelling of 21121130321362 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred thirty million, three hundred twenty-one thousand, three hundred sixty-two".