1013122221 has 32 divisors (see below), whose sum is σ = 1426992000. Its totient is φ = 638426880.

The previous prime is 1013122219. The next prime is 1013122273. The reversal of 1013122221 is 1222213101.

It is not a de Polignac number, because 1013122221 - 2¹ = 1013122219 is a prime.

It is a super-3 number, since 3×1013122221³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1013122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013122321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1851870 + ... + 1852416.

It is an arithmetic number, because the mean of its divisors is an integer number (44593500).

Almost surely, 2^1013122221 is an apocalyptic number.

It is an amenable number.

1013122221 is a deficient number, since it is larger than the sum of its proper divisors (413869779).

1013122221 is a wasteful number, since it uses less digits than its factorization.

1013122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1013122221 is about 31829.5809114729. The cubic root of 1013122221 is about 1004.3550794161.

Adding to 1013122221 its reverse (1222213101), we get a palindrome (2235335322).

The spelling of 1013122221 in words is "one billion, thirteen million, one hundred twenty-two thousand, two hundred twenty-one".