7121118002 has 4 divisors (see below), whose sum is σ = 10681677006. Its totient is φ = 3560559000.

The previous prime is 7121117989. The next prime is 7121118007. The reversal of 7121118002 is 2008111217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2008111217 = 7 ⋅286873031.

It can be written as a sum of positive squares in only one way, i.e., 6943722241 + 177395761 = 83329^2 + 13319^2 .

It is not an unprimeable number, because it can be changed into a prime (7121118007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780279499 + ... + 1780279502.

Almost surely, 2^7121118002 is an apocalyptic number.

7121118002 is a deficient number, since it is larger than the sum of its proper divisors (3560559004).

7121118002 is a wasteful number, since it uses less digits than its factorization.

7121118002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560559003.

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 7121118002 is about 84386.7169760739. The cubic root of 7121118002 is about 1923.9010314207.

Adding to 7121118002 its reverse (2008111217), we get a palindrome (9129229219).

The spelling of 7121118002 in words is "seven billion, one hundred twenty-one million, one hundred eighteen thousand, two".