121829273655 has 16 divisors (see below), whose sum is σ = 194933755104. Its totient is φ = 64973306880.

The previous prime is 121829273653. The next prime is 121829273669. The reversal of 121829273655 is 556372928121.

It is not a de Polignac number, because 121829273655 - 2¹ = 121829273653 is a prime.

It is a super-3 number, since 3×121829273655³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121829273598 and 121829273607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121829273653) 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, 346575 + ... + 603135.

It is an arithmetic number, because the mean of its divisors is an integer number (12183359694).

Almost surely, 2^121829273655 is an apocalyptic number.

121829273655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121829273655 is a deficient number, since it is larger than the sum of its proper divisors (73104481449).

121829273655 is a wasteful number, since it uses less digits than its factorization.

121829273655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288226.

The product of its digits is 1814400, while the sum is 51.

The spelling of 121829273655 in words is "one hundred twenty-one billion, eight hundred twenty-nine million, two hundred seventy-three thousand, six hundred fifty-five".