1213225035 has 32 divisors (see below), whose sum is σ = 2152362240. Its totient is φ = 578582400.

The previous prime is 1213225019. The next prime is 1213225037. The reversal of 1213225035 is 5305223121.

It is a happy number.

It is not a de Polignac number, because 1213225035 - 2⁴ = 1213225019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213224996 and 1213225014.

It is not an unprimeable number, because it can be changed into a prime (1213225037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50205 + ... + 70334.

It is an arithmetic number, because the mean of its divisors is an integer number (67261320).

Almost surely, 2^1213225035 is an apocalyptic number.

1213225035 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1213225035 is a deficient number, since it is larger than the sum of its proper divisors (939137205).

1213225035 is a wasteful number, since it uses less digits than its factorization.

1213225035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120619.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1213225035 is about 34831.3800329530. The cubic root of 1213225035 is about 1066.5481199093.

Adding to 1213225035 its reverse (5305223121), we get a palindrome (6518448156).

The spelling of 1213225035 in words is "one billion, two hundred thirteen million, two hundred twenty-five thousand, thirty-five".