2136121 has 8 divisors (see below), whose sum is σ = 2363144. Its totient is φ = 1918080.

The previous prime is 2136119. The next prime is 2136131. The reversal of 2136121 is 1216312.

It can be written as a sum of positive squares in 4 ways, for example, as 275625 + 1860496 = 525^2 + 1364^2 .

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

It is not a de Polignac number, because 2136121 - 2¹ = 2136119 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 2136095 and 2136104.

It is not an unprimeable number, because it can be changed into a prime (2136131) 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, 1740 + ... + 2701.

It is an arithmetic number, because the mean of its divisors is an integer number (295393).

2^2136121 is an apocalyptic number.

It is an amenable number.

2136121 is a deficient number, since it is larger than the sum of its proper divisors (227023).

2136121 is a wasteful number, since it uses less digits than its factorization.

2136121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491.

The product of its digits is 72, while the sum is 16.

The square root of 2136121 is about 1461.5474675836. The cubic root of 2136121 is about 128.7879656786.

The spelling of 2136121 in words is "two million, one hundred thirty-six thousand, one hundred twenty-one".