7205112021 has 8 divisors (see below), whose sum is σ = 9742123584. Its totient is φ = 4735754240.

The previous prime is 7205112017. The next prime is 7205112029. The reversal of 7205112021 is 1202115027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7205112021 - 2² = 7205112017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7205112029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16913196 + ... + 16913621.

It is an arithmetic number, because the mean of its divisors is an integer number (1217765448).

Almost surely, 2^7205112021 is an apocalyptic number.

7205112021 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7205112021 is a deficient number, since it is larger than the sum of its proper divisors (2537011563).

7205112021 is a wasteful number, since it uses less digits than its factorization.

7205112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33826891.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 7205112021 is about 84882.9312700734. The cubic root of 7205112021 is about 1931.4356612828.

Adding to 7205112021 its reverse (1202115027), we get a palindrome (8407227048).

The spelling of 7205112021 in words is "seven billion, two hundred five million, one hundred twelve thousand, twenty-one".