1201021044 has 24 divisors (see below), whose sum is σ = 2811402048. Its totient is φ = 399051840.

The previous prime is 1201021037. The next prime is 1201021057. The reversal of 1201021044 is 4401201021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157177 + ... + 164640.

It is an arithmetic number, because the mean of its divisors is an integer number (117141752).

Almost surely, 2^1201021044 is an apocalyptic number.

It is an amenable number.

1201021044 is an abundant number, since it is smaller than the sum of its proper divisors (1610381004).

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

1201021044 is a wasteful number, since it uses less digits than its factorization.

1201021044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322135 (or 322133 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1201021044 is about 34655.7505184926. The cubic root of 1201021044 is about 1062.9598785060.

Adding to 1201021044 its reverse (4401201021), we get a palindrome (5602222065).

The spelling of 1201021044 in words is "one billion, two hundred one million, twenty-one thousand, forty-four".