2151521204132 has 12 divisors (see below), whose sum is σ = 3826886076636. Its totient is φ = 1058125182240.

The previous prime is 2151521204083. The next prime is 2151521204143. The reversal of 2151521204132 is 2314021251512.

It can be written as a sum of positive squares in 2 ways, for example, as 1159855765156 + 991665438976 = 1076966^2 + 995824^2 .

It is a super-2 number, since 2×2151521204132² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2151521204095 and 2151521204104.

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, 4408854683 + ... + 4408855170.

It is an arithmetic number, because the mean of its divisors is an integer number (318907173053).

Almost surely, 2^{2151521204132} is an apocalyptic number.

It is an amenable number.

2151521204132 is a deficient number, since it is larger than the sum of its proper divisors (1675364872504).

2151521204132 is a wasteful number, since it uses less digits than its factorization.

2151521204132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8817709918 (or 8817709916 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 2151521204132 its reverse (2314021251512), we get a palindrome (4465542455644).

The spelling of 2151521204132 in words is "two trillion, one hundred fifty-one billion, five hundred twenty-one million, two hundred four thousand, one hundred thirty-two".