1012450221 has 6 divisors (see below), whose sum is σ = 1462428110. Its totient is φ = 674966808.

The previous prime is 1012450211. The next prime is 1012450247. The reversal of 1012450221 is 1220542101.

It can be written as a sum of positive squares in only one way, i.e., 743162121 + 269288100 = 27261^2 + 16410^2 .

It is not a de Polignac number, because 1012450221 - 2⁵ = 1012450189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012450194 and 1012450203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012450211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56247226 + ... + 56247243.

Almost surely, 2^1012450221 is an apocalyptic number.

It is an amenable number.

1012450221 is a deficient number, since it is larger than the sum of its proper divisors (449977889).

1012450221 is a wasteful number, since it uses less digits than its factorization.

1012450221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112494475 (or 112494472 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1012450221 is about 31819.0229422589. The cubic root of 1012450221 is about 1004.1329687040.

Adding to 1012450221 its reverse (1220542101), we get a palindrome (2232992322).

The spelling of 1012450221 in words is "one billion, twelve million, four hundred fifty thousand, two hundred twenty-one".