121201232103111 has 16 divisors (see below), whose sum is σ = 165573527666400. Its totient is φ = 78815602337280.

The previous prime is 121201232103073. The next prime is 121201232103131. The reversal of 121201232103111 is 111301232102121.

It is not a de Polignac number, because 121201232103111 - 2³³ = 121192642168519 is a prime.

It is a super-2 number, since 2×121201232103111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201232103131) 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, 89747820 + ... + 91088273.

It is an arithmetic number, because the mean of its divisors is an integer number (10348345479150).

Almost surely, 2^{121201232103111} is an apocalyptic number.

121201232103111 is a deficient number, since it is larger than the sum of its proper divisors (44372295563289).

121201232103111 is a wasteful number, since it uses less digits than its factorization.

121201232103111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180841586.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 121201232103111 its reverse (111301232102121), we get a palindrome (232502464205232).

The spelling of 121201232103111 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred thirty-two million, one hundred three thousand, one hundred eleven".