1051055121 has 4 divisors (see below), whose sum is σ = 1401406832. Its totient is φ = 700703412.

The previous prime is 1051055119. The next prime is 1051055143. The reversal of 1051055121 is 1215501501.

1051055121 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: 1215501501 = 3 ⋅405167167.

It is not a de Polignac number, because 1051055121 - 2¹ = 1051055119 is a prime.

It is a super-2 number, since 2×1051055121² = 2209433734760649282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051055021) 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, 175175851 + ... + 175175856.

It is an arithmetic number, because the mean of its divisors is an integer number (350351708).

Almost surely, 2^1051055121 is an apocalyptic number.

It is an amenable number.

1051055121 is a deficient number, since it is larger than the sum of its proper divisors (350351711).

1051055121 is an equidigital number, since it uses as much as digits as its factorization.

1051055121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350351710.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 1051055121 is about 32419.9802745159. The cubic root of 1051055121 is about 1016.7366939970.

Adding to 1051055121 its reverse (1215501501), we get a palindrome (2266556622).

The spelling of 1051055121 in words is "one billion, fifty-one million, fifty-five thousand, one hundred twenty-one".