2121350612 has 6 divisors (see below), whose sum is σ = 3712363578. Its totient is φ = 1060675304.

The previous prime is 2121350587. The next prime is 2121350617. The reversal of 2121350612 is 2160531212.

It can be written as a sum of positive squares in only one way, i.e., 2072434576 + 48916036 = 45524^2 + 6994^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121350617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265168823 + ... + 265168830.

It is an arithmetic number, because the mean of its divisors is an integer number (618727263).

Almost surely, 2^2121350612 is an apocalyptic number.

It is an amenable number.

2121350612 is a deficient number, since it is larger than the sum of its proper divisors (1591012966).

2121350612 is a wasteful number, since it uses less digits than its factorization.

2121350612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530337657 (or 530337655 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2121350612 is about 46058.1221067468. The cubic root of 2121350612 is about 1284.9044046636.

Adding to 2121350612 its reverse (2160531212), we get a palindrome (4281881824).

The spelling of 2121350612 in words is "two billion, one hundred twenty-one million, three hundred fifty thousand, six hundred twelve".