121131101042 has 16 divisors (see below), whose sum is σ = 207976276032. Its totient is φ = 51832589040.

The previous prime is 121131100973. The next prime is 121131101057. The reversal of 121131101042 is 240101131121.

It is a self number, because there is not a number n which added to its sum of digits gives 121131101042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6719009 + ... + 6737012.

It is an arithmetic number, because the mean of its divisors is an integer number (12998517252).

Almost surely, 2^121131101042 is an apocalyptic number.

121131101042 is a deficient number, since it is larger than the sum of its proper divisors (86845174990).

121131101042 is a wasteful number, since it uses less digits than its factorization.

121131101042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13456673.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121131101042 its reverse (240101131121), we get a palindrome (361232232163).

The spelling of 121131101042 in words is "one hundred twenty-one billion, one hundred thirty-one million, one hundred one thousand, forty-two".