1332312021 has 12 divisors (see below), whose sum is σ = 1976463372. Its totient is φ = 864202176.

The previous prime is 1332312019. The next prime is 1332312061. The reversal of 1332312021 is 1202132331.

1332312021 is a `hidden beast` number, since 1 + 332 + 312 + 0 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1170666225 + 161645796 = 34215^2 + 12714^2 .

It is not a de Polignac number, because 1332312021 - 2¹ = 1332312019 is a prime.

It is a super-2 number, since 2×1332312021² = 3550110642602208882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1332311985 and 1332312003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1332312001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2000136 + ... + 2000801.

It is an arithmetic number, because the mean of its divisors is an integer number (164705281).

Almost surely, 2^1332312021 is an apocalyptic number.

It is an amenable number.

1332312021 is a deficient number, since it is larger than the sum of its proper divisors (644151351).

1332312021 is a wasteful number, since it uses less digits than its factorization.

1332312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000980 (or 4000977 counting only the distinct ones).

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

The square root of 1332312021 is about 36500.8495928519. The cubic root of 1332312021 is about 1100.3613195955.

Adding to 1332312021 its reverse (1202132331), we get a palindrome (2534444352).

The spelling of 1332312021 in words is "one billion, three hundred thirty-two million, three hundred twelve thousand, twenty-one".