7212947547 has 12 divisors (see below), whose sum is σ = 10413960504. Its totient is φ = 4438736640.

The previous prime is 7212947531. The next prime is 7212947557. The reversal of 7212947547 is 7457492127.

It is not a de Polignac number, because 7212947547 - 2⁴ = 7212947531 is a prime.

It is a super-2 number, since 2×7212947547² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7212947496 and 7212947505.

It is not an unprimeable number, because it can be changed into a prime (7212947557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7112854 + ... + 7113867.

It is an arithmetic number, because the mean of its divisors is an integer number (867830042).

Almost surely, 2^7212947547 is an apocalyptic number.

7212947547 is a deficient number, since it is larger than the sum of its proper divisors (3201012957).

7212947547 is a wasteful number, since it uses less digits than its factorization.

7212947547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14226750 (or 14226737 counting only the distinct ones).

The product of its digits is 987840, while the sum is 48.

The square root of 7212947547 is about 84929.0736261735. The cubic root of 7212947547 is about 1932.1355500851.

The spelling of 7212947547 in words is "seven billion, two hundred twelve million, nine hundred forty-seven thousand, five hundred forty-seven".