1201222005 has 32 divisors (see below), whose sum is σ = 1996185600. Its totient is φ = 616372032.

The previous prime is 1201221961. The next prime is 1201222027. The reversal of 1201222005 is 5002221021.

It is not a de Polignac number, because 1201222005 - 2⁷ = 1201221877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27156 + ... + 56034.

It is an arithmetic number, because the mean of its divisors is an integer number (62380800).

Almost surely, 2^1201222005 is an apocalyptic number.

1201222005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1201222005 is a deficient number, since it is larger than the sum of its proper divisors (794963595).

1201222005 is a wasteful number, since it uses less digits than its factorization.

1201222005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28993.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1201222005 is about 34658.6497861645. The cubic root of 1201222005 is about 1063.0191618322.

Adding to 1201222005 its reverse (5002221021), we get a palindrome (6203443026).

The spelling of 1201222005 in words is "one billion, two hundred one million, two hundred twenty-two thousand, five".