1269382221 has 6 divisors (see below), whose sum is σ = 1833552110. Its totient is φ = 846254808.

The previous prime is 1269382211. The next prime is 1269382243. The reversal of 1269382221 is 1222839621.

It is a happy number.

1269382221 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 656076996 + 613305225 = 25614^2 + 24765^2 .

It is not a de Polignac number, because 1269382221 - 2⁵ = 1269382189 is a prime.

It is a super-2 number, since 2×1269382221² = 3222662445981785682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1269382211) 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, 70521226 + ... + 70521243.

Almost surely, 2^1269382221 is an apocalyptic number.

It is an amenable number.

1269382221 is a deficient number, since it is larger than the sum of its proper divisors (564169889).

1269382221 is a wasteful number, since it uses less digits than its factorization.

1269382221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141042475 (or 141042472 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1269382221 is about 35628.3906596972. The cubic root of 1269382221 is about 1082.7565104599.

The spelling of 1269382221 in words is "one billion, two hundred sixty-nine million, three hundred eighty-two thousand, two hundred twenty-one".