123213002011 has 16 divisors (see below), whose sum is σ = 137732410368. Its totient is φ = 109248212800.

The previous prime is 123213001991. The next prime is 123213002023. The reversal of 123213002011 is 110200312321.

It is a cyclic number.

It is not a de Polignac number, because 123213002011 - 2¹¹ = 123212999963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123213002051) 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, 1596270 + ... + 1671676.

It is an arithmetic number, because the mean of its divisors is an integer number (8608275648).

Almost surely, 2^123213002011 is an apocalyptic number.

123213002011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123213002011 is a deficient number, since it is larger than the sum of its proper divisors (14519408357).

123213002011 is a wasteful number, since it uses less digits than its factorization.

123213002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79082.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123213002011 its reverse (110200312321), we get a palindrome (233413314332).

The spelling of 123213002011 in words is "one hundred twenty-three billion, two hundred thirteen million, two thousand, eleven".