1223002011 has 32 divisors (see below), whose sum is σ = 2034878976. Its totient is φ = 634752000.

The previous prime is 1223002009. The next prime is 1223002021. The reversal of 1223002011 is 1102003221.

It is not a de Polignac number, because 1223002011 - 2¹ = 1223002009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223002021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 400651 + ... + 403691.

It is an arithmetic number, because the mean of its divisors is an integer number (63589968).

Almost surely, 2^1223002011 is an apocalyptic number.

1223002011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1223002011 is a deficient number, since it is larger than the sum of its proper divisors (811876965).

1223002011 is a wasteful number, since it uses less digits than its factorization.

1223002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1223002011 is about 34971.4456521317. The cubic root of 1223002011 is about 1069.4054434108.

Adding to 1223002011 its reverse (1102003221), we get a palindrome (2325005232).

The spelling of 1223002011 in words is "one billion, two hundred twenty-three million, two thousand, eleven".