1211101044 has 12 divisors (see below), whose sum is σ = 2825902464. Its totient is φ = 403700344.

The previous prime is 1211101027. The next prime is 1211101081. The reversal of 1211101044 is 4401011121.

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, 50462532 + ... + 50462555.

It is an arithmetic number, because the mean of its divisors is an integer number (235491872).

Almost surely, 2^1211101044 is an apocalyptic number.

It is an amenable number.

1211101044 is an abundant number, since it is smaller than the sum of its proper divisors (1614801420).

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

1211101044 is a wasteful number, since it uses less digits than its factorization.

1211101044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100925094 (or 100925092 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1211101044 is about 34800.8770579134. The cubic root of 1211101044 is about 1065.9253550183.

Adding to 1211101044 its reverse (4401011121), we get a palindrome (5612112165).

The spelling of 1211101044 in words is "one billion, two hundred eleven million, one hundred one thousand, forty-four".