1012221133 has 16 divisors (see below), whose sum is σ = 1305509760. Its totient is φ = 761544000.

The previous prime is 1012221127. The next prime is 1012221137. The reversal of 1012221133 is 3311222101.

1012221133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-1012221133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012221137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224418 + ... + 228883.

It is an arithmetic number, because the mean of its divisors is an integer number (81594360).

Almost surely, 2^1012221133 is an apocalyptic number.

It is an amenable number.

1012221133 is a deficient number, since it is larger than the sum of its proper divisors (293288627).

1012221133 is a wasteful number, since it uses less digits than its factorization.

1012221133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453348.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1012221133 is about 31815.4228794778. The cubic root of 1012221133 is about 1004.0572276417.

Adding to 1012221133 its reverse (3311222101), we get a palindrome (4323443234).

The spelling of 1012221133 in words is "one billion, twelve million, two hundred twenty-one thousand, one hundred thirty-three".