1007222721 has 8 divisors (see below), whose sum is σ = 1343808864. Its totient is φ = 671059200.

The previous prime is 1007222707. The next prime is 1007222731. The reversal of 1007222721 is 1272227001.

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

It is not a de Polignac number, because 1007222721 - 2¹¹ = 1007220673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1007222691 and 1007222700.

It is not an unprimeable number, because it can be changed into a prime (1007222731) 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, 100051 + ... + 109656.

It is an arithmetic number, because the mean of its divisors is an integer number (167976108).

Almost surely, 2^1007222721 is an apocalyptic number.

It is an amenable number.

1007222721 is a deficient number, since it is larger than the sum of its proper divisors (336586143).

1007222721 is a wasteful number, since it uses less digits than its factorization.

1007222721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211311.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 1007222721 is about 31736.7723784256. The cubic root of 1007222721 is about 1002.4018004031.

Adding to 1007222721 its reverse (1272227001), we get a palindrome (2279449722).

The spelling of 1007222721 in words is "one billion, seven million, two hundred twenty-two thousand, seven hundred twenty-one".