1051102421 has 4 divisors (see below), whose sum is σ = 1052969952. Its totient is φ = 1049234892.

The previous prime is 1051102417. The next prime is 1051102433. The reversal of 1051102421 is 1242011501.

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.

It is a cyclic number.

It is not a de Polignac number, because 1051102421 - 2² = 1051102417 is a prime.

It is a super-2 number, since 2×1051102421² = 2209632598864122482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1051102421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051102411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932921 + ... + 934046.

It is an arithmetic number, because the mean of its divisors is an integer number (263242488).

Almost surely, 2^1051102421 is an apocalyptic number.

It is an amenable number.

1051102421 is a deficient number, since it is larger than the sum of its proper divisors (1867531).

1051102421 is an equidigital number, since it uses as much as digits as its factorization.

1051102421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867530.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1051102421 is about 32420.7097547231. The cubic root of 1051102421 is about 1016.7519456310.

Adding to 1051102421 its reverse (1242011501), we get a palindrome (2293113922).

The spelling of 1051102421 in words is "one billion, fifty-one million, one hundred two thousand, four hundred twenty-one".