121092145092 has 36 divisors (see below), whose sum is σ = 306134747100. Its totient is φ = 40358679552.

The previous prime is 121092145087. The next prime is 121092145117. The reversal of 121092145092 is 290541290121.

121092145092 is a `hidden beast` number, since 12 + 109 + 2 + 1 + 450 + 92 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 34571452356 + 86520692736 = 185934^2 + 294144^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55488 + ... + 495240.

It is an arithmetic number, because the mean of its divisors is an integer number (8503742975).

Almost surely, 2^121092145092 is an apocalyptic number.

121092145092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121092145092 is an abundant number, since it is smaller than the sum of its proper divisors (185042602008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121092145092 is a wasteful number, since it uses less digits than its factorization.

121092145092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447412 (or 447407 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The spelling of 121092145092 in words is "one hundred twenty-one billion, ninety-two million, one hundred forty-five thousand, ninety-two".