12101221554235 has 8 divisors (see below), whose sum is σ = 15841599125616. Its totient is φ = 8800888403040.

The previous prime is 12101221554209. The next prime is 12101221554239. The reversal of 12101221554235 is 53245512210121.

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

It is a de Polignac number, because none of the positive numbers 2^k-12101221554235 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12101221554235.

It is not an unprimeable number, because it can be changed into a prime (12101221554239) 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, 110011104984 + ... + 110011105093.

It is an arithmetic number, because the mean of its divisors is an integer number (1980199890702).

Almost surely, 2^{12101221554235} is an apocalyptic number.

12101221554235 is a deficient number, since it is larger than the sum of its proper divisors (3740377571381).

12101221554235 is a wasteful number, since it uses less digits than its factorization.

12101221554235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220022210093.

The product of its (nonzero) digits is 24000, while the sum is 34.

Adding to 12101221554235 its reverse (53245512210121), we get a palindrome (65346733764356).

The spelling of 12101221554235 in words is "twelve trillion, one hundred one billion, two hundred twenty-one million, five hundred fifty-four thousand, two hundred thirty-five".