7122657212 has 24 divisors (see below), whose sum is σ = 14397672240. Its totient is φ = 3047125760.

The previous prime is 7122657203. The next prime is 7122657221. The reversal of 7122657212 is 2127562217.

It is an interprime number because it is at equal distance from previous prime (7122657203) and next prime (7122657221).

It is a super-2 number, since 2×7122657212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4760387 + ... + 4761882.

It is an arithmetic number, because the mean of its divisors is an integer number (599903010).

Almost surely, 2^7122657212 is an apocalyptic number.

It is an amenable number.

7122657212 is an abundant number, since it is smaller than the sum of its proper divisors (7275015028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7122657212 is a wasteful number, since it uses less digits than its factorization.

7122657212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9522301 (or 9522299 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 7122657212 is about 84395.8364612852. The cubic root of 7122657212 is about 1924.0396367340.

The spelling of 7122657212 in words is "seven billion, one hundred twenty-two million, six hundred fifty-seven thousand, two hundred twelve".