123011220211 has 8 divisors (see below), whose sum is σ = 134997617664. Its totient is φ = 111158749320.

The previous prime is 123011220169. The next prime is 123011220223. The reversal of 123011220211 is 112022110321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123011220211 - 2¹⁷ = 123011089139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123011220251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33479715 + ... + 33483388.

It is an arithmetic number, because the mean of its divisors is an integer number (16874702208).

Almost surely, 2^123011220211 is an apocalyptic number.

123011220211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123011220211 is a deficient number, since it is larger than the sum of its proper divisors (11986397453).

123011220211 is a wasteful number, since it uses less digits than its factorization.

123011220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66963281.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 123011220211 its reverse (112022110321), we get a palindrome (235033330532).

The spelling of 123011220211 in words is "one hundred twenty-three billion, eleven million, two hundred twenty thousand, two hundred eleven".