1292221 has 8 divisors (see below), whose sum is σ = 1563840. Its totient is φ = 1042368.

The previous prime is 1292219. The next prime is 1292237. The reversal of 1292221 is 1222921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1292221 - 2¹ = 1292219 is a prime.

It is a super-2 number, since 2×1292221² = 3339670225682, 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 (1292251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5311 + ... + 5548.

It is an arithmetic number, because the mean of its divisors is an integer number (195480).

2^1292221 is an apocalyptic number.

It is an amenable number.

1292221 is a deficient number, since it is larger than the sum of its proper divisors (271619).

1292221 is a wasteful number, since it uses less digits than its factorization.

1292221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10883.

The product of its digits is 144, while the sum is 19.

The square root of 1292221 is about 1136.7589894080. The cubic root of 1292221 is about 108.9211617437.

The spelling of 1292221 in words is "one million, two hundred ninety-two thousand, two hundred twenty-one".