36672121 has 4 divisors (see below), whose sum is σ = 36684544. Its totient is φ = 36659700.

The previous prime is 36672107. The next prime is 36672149. The reversal of 36672121 is 12127663.

36672121 = T₄₉₄₃ + T₄₉₄₄ + T₄₉₄₅.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 36672121 - 2⁷ = 36671993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36672121.

It is not an unprimeable number, because it can be changed into a prime (36672161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036 + ... + 8626.

It is an arithmetic number, because the mean of its divisors is an integer number (9171136).

Almost surely, 2^36672121 is an apocalyptic number.

36672121 is the 4945-th centered triangular number.

It is an amenable number.

36672121 is a deficient number, since it is larger than the sum of its proper divisors (12423).

36672121 is an equidigital number, since it uses as much as digits as its factorization.

36672121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12422.

The product of its digits is 3024, while the sum is 28.

The square root of 36672121 is about 6055.7510681996. The cubic root of 36672121 is about 332.2349699913.

Adding to 36672121 its reverse (12127663), we get a palindrome (48799784).

The spelling of 36672121 in words is "thirty-six million, six hundred seventy-two thousand, one hundred twenty-one".