121729077141 has 16 divisors (see below), whose sum is σ = 185502096000. Its totient is φ = 69555659328.

The previous prime is 121729077131. The next prime is 121729077143. The reversal of 121729077141 is 141770927121.

It is not a de Polignac number, because 121729077141 - 2⁶ = 121729077077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121729077093 and 121729077102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121729077143) 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, 258835 + ... + 557183.

It is an arithmetic number, because the mean of its divisors is an integer number (11593881000).

Almost surely, 2^121729077141 is an apocalyptic number.

It is an amenable number.

121729077141 is a deficient number, since it is larger than the sum of its proper divisors (63773018859).

121729077141 is a wasteful number, since it uses less digits than its factorization.

121729077141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317788.

The product of its (nonzero) digits is 49392, while the sum is 42.

The spelling of 121729077141 in words is "one hundred twenty-one billion, seven hundred twenty-nine million, seventy-seven thousand, one hundred forty-one".