1222155051 has 8 divisors (see below), whose sum is σ = 1754889360. Its totient is φ = 752095392.

The previous prime is 1222155017. The next prime is 1222155059. The reversal of 1222155051 is 1505512221.

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

It is not a de Polignac number, because 1222155051 - 2¹³ = 1222146859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222155059) 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, 15668616 + ... + 15668693.

It is an arithmetic number, because the mean of its divisors is an integer number (219361170).

Almost surely, 2^1222155051 is an apocalyptic number.

1222155051 is a deficient number, since it is larger than the sum of its proper divisors (532734309).

1222155051 is a wasteful number, since it uses less digits than its factorization.

1222155051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31337325.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1222155051 is about 34959.3342470934. The cubic root of 1222155051 is about 1069.1585229124.

Adding to 1222155051 its reverse (1505512221), we get a palindrome (2727667272).

The spelling of 1222155051 in words is "one billion, two hundred twenty-two million, one hundred fifty-five thousand, fifty-one".