1021351225 has 12 divisors (see below), whose sum is σ = 1321540416. Its totient is φ = 781555280.

The previous prime is 1021351223. The next prime is 1021351231. The reversal of 1021351225 is 5221531201.

1021351225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021351225 - 2¹ = 1021351223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021351196 and 1021351205.

It is not an unprimeable number, because it can be changed into a prime (1021351223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 887557 + ... + 888706.

It is an arithmetic number, because the mean of its divisors is an integer number (110128368).

Almost surely, 2^1021351225 is an apocalyptic number.

It is an amenable number.

1021351225 is a deficient number, since it is larger than the sum of its proper divisors (300189191).

1021351225 is a wasteful number, since it uses less digits than its factorization.

1021351225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776296 (or 1776291 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1021351225 is about 31958.5860920035. The cubic root of 1021351225 is about 1007.0670146553.

Adding to 1021351225 its reverse (5221531201), we get a palindrome (6242882426).

The spelling of 1021351225 in words is "one billion, twenty-one million, three hundred fifty-one thousand, two hundred twenty-five".