123242202111 has 16 divisors (see below), whose sum is σ = 191793337344. Its totient is φ = 68925729504.

The previous prime is 123242202107. The next prime is 123242202121. The reversal of 123242202111 is 111202242321.

It is a happy number.

It is not a de Polignac number, because 123242202111 - 2² = 123242202107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123242202101) 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, 62431740 + ... + 62433713.

It is an arithmetic number, because the mean of its divisors is an integer number (11987083584).

Almost surely, 2^123242202111 is an apocalyptic number.

123242202111 is a deficient number, since it is larger than the sum of its proper divisors (68551135233).

123242202111 is a wasteful number, since it uses less digits than its factorization.

123242202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124865510.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 123242202111 its reverse (111202242321), we get a palindrome (234444444432).

The spelling of 123242202111 in words is "one hundred twenty-three billion, two hundred forty-two million, two hundred two thousand, one hundred eleven".