1200856122 has 12 divisors (see below), whose sum is σ = 2601854970. Its totient is φ = 400285368.

The previous prime is 1200856067. The next prime is 1200856123. The reversal of 1200856122 is 2216580021.

It is a happy number.

1200856122 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1112289201 + 88566921 = 33351^2 + 9411^2 .

It is not an unprimeable number, because it can be changed into a prime (1200856123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33357097 + ... + 33357132.

Almost surely, 2^1200856122 is an apocalyptic number.

1200856122 is an abundant number, since it is smaller than the sum of its proper divisors (1400998848).

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

1200856122 is a wasteful number, since it uses less digits than its factorization.

1200856122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66714237 (or 66714234 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1200856122 is about 34653.3710048532. The cubic root of 1200856122 is about 1062.9112217138.

The spelling of 1200856122 in words is "one billion, two hundred million, eight hundred fifty-six thousand, one hundred twenty-two".