1051013121 has 8 divisors (see below), whose sum is σ = 1422266784. Its totient is φ = 690217440.

The previous prime is 1051013111. The next prime is 1051013123. The reversal of 1051013121 is 1213101501.

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

It is a de Polignac number, because none of the positive numbers 2^k-1051013121 is a prime.

It is a super-2 number, since 2×1051013121² = 2209257161028321282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1051013121.

It is not an unprimeable number, because it can be changed into a prime (1051013123) 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, 2614260 + ... + 2614661.

It is an arithmetic number, because the mean of its divisors is an integer number (177783348).

Almost surely, 2^1051013121 is an apocalyptic number.

It is an amenable number.

1051013121 is a deficient number, since it is larger than the sum of its proper divisors (371253663).

1051013121 is an equidigital number, since it uses as much as digits as its factorization.

1051013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5228991.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 1051013121 is about 32419.3325193472. The cubic root of 1051013121 is about 1016.7231509362.

Adding to 1051013121 its reverse (1213101501), we get a palindrome (2264114622).

The spelling of 1051013121 in words is "one billion, fifty-one million, thirteen thousand, one hundred twenty-one".