121051505711 has 16 divisors (see below), whose sum is σ = 126441289728. Its totient is φ = 115759432800.

The previous prime is 121051505657. The next prime is 121051505717. The reversal of 121051505711 is 117505150121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121051505711 - 2²⁶ = 120984396847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121051505717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1450541 + ... + 1531721.

It is an arithmetic number, because the mean of its divisors is an integer number (7902580608).

Almost surely, 2^121051505711 is an apocalyptic number.

121051505711 is a deficient number, since it is larger than the sum of its proper divisors (5389784017).

121051505711 is a wasteful number, since it uses less digits than its factorization.

121051505711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81782.

The product of its (nonzero) digits is 1750, while the sum is 29.

Adding to 121051505711 its reverse (117505150121), we get a palindrome (238556655832).

The spelling of 121051505711 in words is "one hundred twenty-one billion, fifty-one million, five hundred five thousand, seven hundred eleven".