122821806 has 16 divisors (see below), whose sum is σ = 245798784. Its totient is φ = 40914744.

The previous prime is 122821799. The next prime is 122821859. The reversal of 122821806 is 608128221.

It is a congruent 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, 5541 + ... + 16623.

It is an arithmetic number, because the mean of its divisors is an integer number (15362424).

Almost surely, 2^122821806 is an apocalyptic number.

It is a pronic number, being equal to 11082×11083.

122821806 is an abundant number, since it is smaller than the sum of its proper divisors (122976978).

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

122821806 is a wasteful number, since it uses less digits than its factorization.

122821806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12935.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 122821806 is about 11082.4999887210. The cubic root of 122821806 is about 497.0787066641.

The spelling of 122821806 in words is "one hundred twenty-two million, eight hundred twenty-one thousand, eight hundred six".