1051021117 has 16 divisors (see below), whose sum is σ = 1100736000. Its totient is φ = 1002409920.

The previous prime is 1051021061. The next prime is 1051021129. The reversal of 1051021117 is 7111201501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1051021117 is a prime.

It is a super-2 number, since 2×1051021117² = 2209290776759855378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1051021094 and 1051021103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051021187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641223 + ... + 642859.

It is an arithmetic number, because the mean of its divisors is an integer number (68796000).

Almost surely, 2^1051021117 is an apocalyptic number.

It is an amenable number.

1051021117 is a deficient number, since it is larger than the sum of its proper divisors (49714883).

1051021117 is a wasteful number, since it uses less digits than its factorization.

1051021117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956.

The product of its (nonzero) digits is 70, while the sum is 19.

The square root of 1051021117 is about 32419.4558405905. The cubic root of 1051021117 is about 1016.7257293048.

Adding to 1051021117 its reverse (7111201501), we get a palindrome (8162222618).

The spelling of 1051021117 in words is "one billion, fifty-one million, twenty-one thousand, one hundred seventeen".