21121330031332 has 12 divisors (see below), whose sum is σ = 36990825888940. Its totient is φ = 10552522634496.

The previous prime is 21121330031303. The next prime is 21121330031407. The reversal of 21121330031332 is 23313003312112.

It can be written as a sum of positive squares in 2 ways, for example, as 19433055990436 + 1688274040896 = 4408294^2 + 1299336^2 .

It is a super-2 number, since 2×21121330031332² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21121330031297 and 21121330031306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035589457 + ... + 2035599832.

Almost surely, 2^{21121330031332} is an apocalyptic number.

It is an amenable number.

21121330031332 is a deficient number, since it is larger than the sum of its proper divisors (15869495857608).

21121330031332 is a wasteful number, since it uses less digits than its factorization.

21121330031332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071190590 (or 4071190588 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21121330031332 its reverse (23313003312112), we get a palindrome (44434333343444).

The spelling of 21121330031332 in words is "twenty-one trillion, one hundred twenty-one billion, three hundred thirty million, thirty-one thousand, three hundred thirty-two".