1211952444 has 12 divisors (see below), whose sum is σ = 2827889064. Its totient is φ = 403984144.

The previous prime is 1211952421. The next prime is 1211952461. The reversal of 1211952444 is 4442591121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50498007 + ... + 50498030.

It is an arithmetic number, because the mean of its divisors is an integer number (235657422).

Almost surely, 2^1211952444 is an apocalyptic number.

It is an amenable number.

1211952444 is an abundant number, since it is smaller than the sum of its proper divisors (1615936620).

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

1211952444 is a wasteful number, since it uses less digits than its factorization.

1211952444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100996044 (or 100996042 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 1211952444 is about 34813.1073591543. The cubic root of 1211952444 is about 1066.1750771676.

The spelling of 1211952444 in words is "one billion, two hundred eleven million, nine hundred fifty-two thousand, four hundred forty-four".