1255121222 has 8 divisors (see below), whose sum is σ = 1883652672. Its totient is φ = 627237000.

The previous prime is 1255121221. The next prime is 1255121261. The reversal of 1255121222 is 2221215521.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255121221) 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, 156929 + ... + 164732.

It is an arithmetic number, because the mean of its divisors is an integer number (235456584).

Almost surely, 2^1255121222 is an apocalyptic number.

1255121222 is a deficient number, since it is larger than the sum of its proper divisors (628531450).

1255121222 is a wasteful number, since it uses less digits than its factorization.

1255121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323614.

The product of its digits is 800, while the sum is 23.

The square root of 1255121222 is about 35427.6900460643. The cubic root of 1255121222 is about 1078.6864523165.

Adding to 1255121222 its reverse (2221215521), we get a palindrome (3476336743).

The spelling of 1255121222 in words is "one billion, two hundred fifty-five million, one hundred twenty-one thousand, two hundred twenty-two".