121140723646 has 8 divisors (see below), whose sum is σ = 182715014664. Its totient is φ = 60235718760.

The previous prime is 121140723631. The next prime is 121140723667. The reversal of 121140723646 is 646327041121.

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

It is a super-3 number, since 3×121140723646³ (a number of 34 digits) contains 333 as substring.

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, 167321080 + ... + 167321803.

It is an arithmetic number, because the mean of its divisors is an integer number (22839376833).

Almost surely, 2^121140723646 is an apocalyptic number.

121140723646 is a deficient number, since it is larger than the sum of its proper divisors (61574291018).

121140723646 is a wasteful number, since it uses less digits than its factorization.

121140723646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334643066.

The product of its (nonzero) digits is 48384, while the sum is 37.

Adding to 121140723646 its reverse (646327041121), we get a palindrome (767467764767).

The spelling of 121140723646 in words is "one hundred twenty-one billion, one hundred forty million, seven hundred twenty-three thousand, six hundred forty-six".