7221026146 has 16 divisors (see below), whose sum is σ = 10880969400. Its totient is φ = 3594055680.

The previous prime is 7221026143. The next prime is 7221026179. The reversal of 7221026146 is 6416201227.

It can be written as a sum of positive squares in 4 ways, for example, as 6762595225 + 458430921 = 82235^2 + 21411^2 .

It is a super-2 number, since 2×7221026146² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7221026143) 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, 952780 + ... + 960328.

Almost surely, 2^7221026146 is an apocalyptic number.

7221026146 is a deficient number, since it is larger than the sum of its proper divisors (3659943254).

7221026146 is a wasteful number, since it uses less digits than its factorization.

7221026146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9669.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 7221026146 is about 84976.6211731203. The cubic root of 7221026146 is about 1932.8566202825.

The spelling of 7221026146 in words is "seven billion, two hundred twenty-one million, twenty-six thousand, one hundred forty-six".