7087020121 has 4 divisors (see below), whose sum is σ = 7460021200. Its totient is φ = 6714019044.

The previous prime is 7087020053. The next prime is 7087020137. The reversal of 7087020121 is 1210207807.

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 an emirpimes, since its reverse is a distinct semiprime: 1210207807 = 569 ⋅2126903.

It is a cyclic number.

It is not a de Polignac number, because 7087020121 - 2¹⁹ = 7086495833 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 7087020121.

It is not an unprimeable number, because it can be changed into a prime (7087020151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186500511 + ... + 186500548.

It is an arithmetic number, because the mean of its divisors is an integer number (1865005300).

Almost surely, 2^7087020121 is an apocalyptic number.

It is an amenable number.

7087020121 is a deficient number, since it is larger than the sum of its proper divisors (373001079).

7087020121 is a wasteful number, since it uses less digits than its factorization.

7087020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373001078.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 7087020121 is about 84184.4410862245. The cubic root of 7087020121 is about 1920.8253939067.

Adding to 7087020121 its reverse (1210207807), we get a palindrome (8297227928).

The spelling of 7087020121 in words is "seven billion, eighty-seven million, twenty thousand, one hundred twenty-one".