1257030222 has 96 divisors (see below), whose sum is σ = 3049436160. Its totient is φ = 344050560.

The previous prime is 1257030217. The next prime is 1257030239. The reversal of 1257030222 is 2220307521.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1257030192 and 1257030201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 974554 + ... + 975842.

It is an arithmetic number, because the mean of its divisors is an integer number (31764960).

Almost surely, 2^1257030222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1257030222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1524718080).

1257030222 is an abundant number, since it is smaller than the sum of its proper divisors (1792405938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1257030222 is a wasteful number, since it uses less digits than its factorization.

1257030222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 1257030222 is about 35454.6220118055. The cubic root of 1257030222 is about 1079.2330580370.

Adding to 1257030222 its reverse (2220307521), we get a palindrome (3477337743).

The spelling of 1257030222 in words is "one billion, two hundred fifty-seven million, thirty thousand, two hundred twenty-two".