12967021 has 8 divisors (see below), whose sum is σ = 13465088. Its totient is φ = 12474000.

The previous prime is 12967013. The next prime is 12967061. The reversal of 12967021 is 12076921.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12967021 - 2³ = 12967013 is a prime.

It is a super-2 number, since 2×12967021² = 336287267228882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12967001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4456 + ... + 6766.

It is an arithmetic number, because the mean of its divisors is an integer number (1683136).

Almost surely, 2^12967021 is an apocalyptic number.

It is an amenable number.

12967021 is a deficient number, since it is larger than the sum of its proper divisors (498067).

12967021 is a wasteful number, since it uses less digits than its factorization.

12967021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 12967021 is about 3600.9750068558. The cubic root of 12967021 is about 234.9344679203.

The spelling of 12967021 in words is "twelve million, nine hundred sixty-seven thousand, twenty-one".