1015222001 has 4 divisors (see below), whose sum is σ = 1059362112. Its totient is φ = 971081892.

The previous prime is 1015221983. The next prime is 1015222051. The reversal of 1015222001 is 1002225101.

1015222001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1002225101 = 1063 ⋅942827.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1015222001 is a prime.

It is a super-2 number, since 2×1015222001² = 2061351422628888002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1015222051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22070021 + ... + 22070066.

It is an arithmetic number, because the mean of its divisors is an integer number (264840528).

Almost surely, 2^1015222001 is an apocalyptic number.

It is an amenable number.

1015222001 is a deficient number, since it is larger than the sum of its proper divisors (44140111).

1015222001 is an equidigital number, since it uses as much as digits as its factorization.

1015222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44140110.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1015222001 is about 31862.5485641058. The cubic root of 1015222001 is about 1005.0484703898.

Adding to 1015222001 its reverse (1002225101), we get a palindrome (2017447102).

The spelling of 1015222001 in words is "one billion, fifteen million, two hundred twenty-two thousand, one".