12013010032221 has 48 divisors (see below), whose sum is σ = 19635695688960. Its totient is φ = 7010401829760.

The previous prime is 12013010032141. The next prime is 12013010032301. The reversal of 12013010032221 is 12223001031021.

12013010032221 is a `hidden beast` number, since 1 + 20 + 1 + 301 + 0 + 0 + 322 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (12013010032141) and next prime (12013010032301).

It is not a de Polignac number, because 12013010032221 - 2³⁹ = 11463254218333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12013010032194 and 12013010032203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013010039221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4646970 + ... + 6754283.

It is an arithmetic number, because the mean of its divisors is an integer number (409076993520).

Almost surely, 2^{12013010032221} is an apocalyptic number.

12013010032221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12013010032221 is a deficient number, since it is larger than the sum of its proper divisors (7622685656739).

12013010032221 is a wasteful number, since it uses less digits than its factorization.

12013010032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11401666 (or 11401663 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12013010032221 its reverse (12223001031021), we get a palindrome (24236011063242).

The spelling of 12013010032221 in words is "twelve trillion, thirteen billion, ten million, thirty-two thousand, two hundred twenty-one".