7012912109 has 4 divisors (see below), whose sum is σ = 8014756704. Its totient is φ = 6011067516.

The previous prime is 7012912091. The next prime is 7012912133. The reversal of 7012912109 is 9012192107.

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: 9012192107 = 11701 ⋅770207.

It is a cyclic number.

It is not a de Polignac number, because 7012912109 - 2¹² = 7012908013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7012912169) 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, 500922287 + ... + 500922300.

It is an arithmetic number, because the mean of its divisors is an integer number (2003689176).

Almost surely, 2^7012912109 is an apocalyptic number.

It is an amenable number.

7012912109 is a deficient number, since it is larger than the sum of its proper divisors (1001844595).

7012912109 is a wasteful number, since it uses less digits than its factorization.

7012912109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001844594.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 7012912109 is about 83743.1317123978. The cubic root of 7012912109 is about 1914.1066496486.

The spelling of 7012912109 in words is "seven billion, twelve million, nine hundred twelve thousand, one hundred nine".