121021100011142 has 8 divisors (see below), whose sum is σ = 181532408029632. Its totient is φ = 60510297334600.

The previous prime is 121021100011129. The next prime is 121021100011159. The reversal of 121021100011142 is 241110001120121.

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

It is a super-2 number, since 2×121021100011142² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121021100011142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125736209 + ... + 126695052.

It is an arithmetic number, because the mean of its divisors is an integer number (22691551003704).

Almost surely, 2^{121021100011142} is an apocalyptic number.

121021100011142 is a deficient number, since it is larger than the sum of its proper divisors (60511308018490).

121021100011142 is a wasteful number, since it uses less digits than its factorization.

121021100011142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252670974.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121021100011142 its reverse (241110001120121), we get a palindrome (362131101131263).

The spelling of 121021100011142 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred million, eleven thousand, one hundred forty-two".