122781066 has 16 divisors (see below), whose sum is σ = 247212000. Its totient is φ = 40652048.

The previous prime is 122781053. The next prime is 122781079. The reversal of 122781066 is 660187221.

It is an interprime number because it is at equal distance from previous prime (122781053) and next prime (122781079).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67776 + ... + 69563.

It is an arithmetic number, because the mean of its divisors is an integer number (15450750).

Almost surely, 2^122781066 is an apocalyptic number.

122781066 is an abundant number, since it is smaller than the sum of its proper divisors (124430934).

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

122781066 is a wasteful number, since it uses less digits than its factorization.

122781066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137493.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 122781066 is about 11080.6618033401. The cubic root of 122781066 is about 497.0237402411.

The spelling of 122781066 in words is "one hundred twenty-two million, seven hundred eighty-one thousand, sixty-six".