1222152501 has 4 divisors (see below), whose sum is σ = 1629536672. Its totient is φ = 814768332.

The previous prime is 1222152499. The next prime is 1222152509. The reversal of 1222152501 is 1052512221.

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: 1052512221 = 3 ⋅350837407.

It is not a de Polignac number, because 1222152501 - 2¹ = 1222152499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222152509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203692081 + ... + 203692086.

It is an arithmetic number, because the mean of its divisors is an integer number (407384168).

Almost surely, 2^1222152501 is an apocalyptic number.

It is an amenable number.

1222152501 is a deficient number, since it is larger than the sum of its proper divisors (407384171).

1222152501 is an equidigital number, since it uses as much as digits as its factorization.

1222152501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407384170.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1222152501 is about 34959.2977761282. The cubic root of 1222152501 is about 1069.1577793199.

Adding to 1222152501 its reverse (1052512221), we get a palindrome (2274664722).

The spelling of 1222152501 in words is "one billion, two hundred twenty-two million, one hundred fifty-two thousand, five hundred one".