1011211221044 has 24 divisors (see below), whose sum is σ = 1796142414528. Its totient is φ = 498040361280.

The previous prime is 1011211221043. The next prime is 1011211221127. The reversal of 1011211221044 is 4401221121101.

1011211221044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011211221043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266377 + ... + 1904240.

It is an arithmetic number, because the mean of its divisors is an integer number (74839267272).

Almost surely, 2^{1011211221044} is an apocalyptic number.

It is an amenable number.

1011211221044 is a deficient number, since it is larger than the sum of its proper divisors (784931193484).

1011211221044 is a wasteful number, since it uses less digits than its factorization.

1011211221044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171815 (or 3171813 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 1011211221044 its reverse (4401221121101), we get a palindrome (5412432342145).

The spelling of 1011211221044 in words is "one trillion, eleven billion, two hundred eleven million, two hundred twenty-one thousand, forty-four".