1225200011 has 16 divisors (see below), whose sum is σ = 1447127040. Its totient is φ = 1015079040.

The previous prime is 1225199951. The next prime is 1225200023. The reversal of 1225200011 is 1100025221.

It is a cyclic number.

It is not a de Polignac number, because 1225200011 - 2⁶ = 1225199947 is a prime.

It is a super-2 number, since 2×1225200011² = 3002230133908800242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225200061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209120 + ... + 214898.

It is an arithmetic number, because the mean of its divisors is an integer number (90445440).

Almost surely, 2^1225200011 is an apocalyptic number.

1225200011 is a deficient number, since it is larger than the sum of its proper divisors (221927029).

1225200011 is an equidigital number, since it uses as much as digits as its factorization.

1225200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6794.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1225200011 is about 35002.8571833786. The cubic root of 1225200011 is about 1070.0457112099.

Adding to 1225200011 its reverse (1100025221), we get a palindrome (2325225232).

The spelling of 1225200011 in words is "one billion, two hundred twenty-five million, two hundred thousand, eleven".