123212221101 has 12 divisors (see below), whose sum is σ = 178344766080. Its totient is φ = 81969992520.

The previous prime is 123212221061. The next prime is 123212221169. The reversal of 123212221101 is 101122212321.

123212221101 is a `hidden beast` number, since 12 + 321 + 222 + 110 + 1 = 666.

It is not a de Polignac number, because 123212221101 - 2⁶ = 123212221037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123212228101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14286135 + ... + 14294756.

It is an arithmetic number, because the mean of its divisors is an integer number (14862063840).

Almost surely, 2^123212221101 is an apocalyptic number.

It is an amenable number.

123212221101 is a deficient number, since it is larger than the sum of its proper divisors (55132544979).

123212221101 is a wasteful number, since it uses less digits than its factorization.

123212221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28581376 (or 28581373 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 123212221101 its reverse (101122212321), we get a palindrome (224334433422).

The spelling of 123212221101 in words is "one hundred twenty-three billion, two hundred twelve million, two hundred twenty-one thousand, one hundred one".