121361611142 has 32 divisors (see below), whose sum is σ = 197885614080. Its totient is φ = 55609986240.

The previous prime is 121361611127. The next prime is 121361611153. The reversal of 121361611142 is 241116163121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3063143 + ... + 3102509.

It is an arithmetic number, because the mean of its divisors is an integer number (6183925440).

Almost surely, 2^121361611142 is an apocalyptic number.

121361611142 is a deficient number, since it is larger than the sum of its proper divisors (76524002938).

121361611142 is a wasteful number, since it uses less digits than its factorization.

121361611142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42036.

The product of its digits is 1728, while the sum is 29.

Adding to 121361611142 its reverse (241116163121), we get a palindrome (362477774263).

The spelling of 121361611142 in words is "one hundred twenty-one billion, three hundred sixty-one million, six hundred eleven thousand, one hundred forty-two".