123020220011 has 16 divisors (see below), whose sum is σ = 135801492960. Its totient is φ = 110716519680.

The previous prime is 123020219977. The next prime is 123020220013. The reversal of 123020220011 is 110022020321.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-123020220011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123020220013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 768521 + ... + 914693.

It is an arithmetic number, because the mean of its divisors is an integer number (8487593310).

Almost surely, 2^123020220011 is an apocalyptic number.

123020220011 is a deficient number, since it is larger than the sum of its proper divisors (12781272949).

123020220011 is a wasteful number, since it uses less digits than its factorization.

123020220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147806.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 123020220011 its reverse (110022020321), we get a palindrome (233042240332).

The spelling of 123020220011 in words is "one hundred twenty-three billion, twenty million, two hundred twenty thousand, eleven".