121121566054 has 16 divisors (see below), whose sum is σ = 197839220400. Its totient is φ = 55394980704.

The previous prime is 121121566037. The next prime is 121121566067. The reversal of 121121566054 is 450665121121.

It is a super-3 number, since 3×121121566054³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54954237 + ... + 54956440.

It is an arithmetic number, because the mean of its divisors is an integer number (12364951275).

Almost surely, 2^121121566054 is an apocalyptic number.

121121566054 is a deficient number, since it is larger than the sum of its proper divisors (76717654346).

121121566054 is a wasteful number, since it uses less digits than its factorization.

121121566054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109910727.

The product of its (nonzero) digits is 14400, while the sum is 34.

Adding to 121121566054 its reverse (450665121121), we get a palindrome (571786687175).

The spelling of 121121566054 in words is "one hundred twenty-one billion, one hundred twenty-one million, five hundred sixty-six thousand, fifty-four".