1051035021 has 16 divisors (see below), whose sum is σ = 1576315520. Its totient is φ = 700688556.

The previous prime is 1051035019. The next prime is 1051035043. The reversal of 1051035021 is 1205301501.

It is not a de Polignac number, because 1051035021 - 2¹ = 1051035019 is a prime.

It is a super-2 number, since 2×1051035021² = 2209349230736940882, 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 = 1051034985 and 1051035003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051035001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238105 + ... + 242478.

It is an arithmetic number, because the mean of its divisors is an integer number (98519720).

Almost surely, 2^1051035021 is an apocalyptic number.

It is an amenable number.

1051035021 is a deficient number, since it is larger than the sum of its proper divisors (525280499).

1051035021 is an frugal number, since it uses more digits than its factorization.

1051035021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480604 (or 480586 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 1051035021 is about 32419.6702790143. The cubic root of 1051035021 is about 1016.7302127201.

Adding to 1051035021 its reverse (1205301501), we get a palindrome (2256336522).

The spelling of 1051035021 in words is "one billion, fifty-one million, thirty-five thousand, twenty-one".