1050213121 has 2 divisors, whose sum is σ = 1050213122. Its totient is φ = 1050213120.

The previous prime is 1050213119. The next prime is 1050213127. The reversal of 1050213121 is 1213120501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1019908096 + 30305025 = 31936^2 + 5505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050213121 - 2¹ = 1050213119 is a prime.

It is a super-2 number, since 2×1050213121² = 2205895199041121282, which contains 22 as substring.

Together with 1050213119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1050213095 and 1050213104.

It is not a weakly prime, because it can be changed into another prime (1050213127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525106560 + 525106561.

It is an arithmetic number, because the mean of its divisors is an integer number (525106561).

Almost surely, 2^1050213121 is an apocalyptic number.

It is an amenable number.

1050213121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1050213121 is an equidigital number, since it uses as much as digits as its factorization.

1050213121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1050213121 is about 32406.9918536109. The cubic root of 1050213121 is about 1016.4651189590.

Adding to 1050213121 its reverse (1213120501), we get a palindrome (2263333622).

The spelling of 1050213121 in words is "one billion, fifty million, two hundred thirteen thousand, one hundred twenty-one".