121730310406 has 8 divisors (see below), whose sum is σ = 182748524904. Its totient is φ = 60814135440.

The previous prime is 121730310391. The next prime is 121730310413. The reversal of 121730310406 is 604013037121.

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

It is a super-2 number, since 2×121730310406² (a number of 23 digits) contains 22 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, 25506900 + ... + 25511671.

It is an arithmetic number, because the mean of its divisors is an integer number (22843565613).

Almost surely, 2^121730310406 is an apocalyptic number.

121730310406 is a deficient number, since it is larger than the sum of its proper divisors (61018214498).

121730310406 is a wasteful number, since it uses less digits than its factorization.

121730310406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51019766.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 121730310406 its reverse (604013037121), we get a palindrome (725743347527).

The spelling of 121730310406 in words is "one hundred twenty-one billion, seven hundred thirty million, three hundred ten thousand, four hundred six".