121091275642 has 8 divisors (see below), whose sum is σ = 187496168832. Its totient is φ = 58592552700.

The previous prime is 121091275639. The next prime is 121091275649. The reversal of 121091275642 is 246572190121.

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

It is a junction number, because it is equal to n+sod(n) for n = 121091275595 and 121091275604.

It is not an unprimeable number, because it can be changed into a prime (121091275649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976542484 + ... + 976542607.

It is an arithmetic number, because the mean of its divisors is an integer number (23437021104).

Almost surely, 2^121091275642 is an apocalyptic number.

121091275642 is a deficient number, since it is larger than the sum of its proper divisors (66404893190).

121091275642 is a wasteful number, since it uses less digits than its factorization.

121091275642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953085124.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 121091275642 in words is "one hundred twenty-one billion, ninety-one million, two hundred seventy-five thousand, six hundred forty-two".