1223101011 has 16 divisors (see below), whose sum is σ = 1796675328. Its totient is φ = 733932000.

The previous prime is 1223101007. The next prime is 1223101037. The reversal of 1223101011 is 1101013221.

It is not a de Polignac number, because 1223101011 - 2² = 1223101007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223101051) 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, 180151 + ... + 186816.

It is an arithmetic number, because the mean of its divisors is an integer number (112292208).

Almost surely, 2^1223101011 is an apocalyptic number.

1223101011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1223101011 is a deficient number, since it is larger than the sum of its proper divisors (573574317).

1223101011 is a wasteful number, since it uses less digits than its factorization.

1223101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367082.

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

The square root of 1223101011 is about 34972.8610639736. The cubic root of 1223101011 is about 1069.4342981691.

Adding to 1223101011 its reverse (1101013221), we get a palindrome (2324114232).

It can be divided in two parts, 122310 and 1011, that added together give a palindrome (123321).

The spelling of 1223101011 in words is "one billion, two hundred twenty-three million, one hundred one thousand, eleven".