1222153 has 4 divisors (see below), whose sum is σ = 1225728. Its totient is φ = 1218580.

The previous prime is 1222129. The next prime is 1222157. The reversal of 1222153 is 3512221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3512221 = 571 ⋅6151.

It is a cyclic number.

It is not a de Polignac number, because 1222153 - 2⁹ = 1221641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213 + ... + 1978.

It is an arithmetic number, because the mean of its divisors is an integer number (306432).

2^1222153 is an apocalyptic number.

It is an amenable number.

1222153 is a deficient number, since it is larger than the sum of its proper divisors (3575).

1222153 is an equidigital number, since it uses as much as digits as its factorization.

1222153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3574.

The product of its digits is 120, while the sum is 16.

The square root of 1222153 is about 1105.5102894139. The cubic root of 1222153 is about 106.9157924831.

Adding to 1222153 its reverse (3512221), we get a palindrome (4734374).

It can be divided in two parts, 1222 and 153, that multiplied together give a triangular number (186966 = T₆₁₁).

The spelling of 1222153 in words is "one million, two hundred twenty-two thousand, one hundred fifty-three".