1061221300 has 18 divisors (see below), whose sum is σ = 2302850438. Its totient is φ = 424488480.

The previous prime is 1061221283. The next prime is 1061221303. The reversal of 1061221300 is 31221601.

It can be written as a sum of positive squares in 3 ways, for example, as 8737936 + 1052483364 = 2956^2 + 32442^2 .

It is a super-2 number, since 2×1061221300² = 2252381295147380000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061221303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5306007 + ... + 5306206.

Almost surely, 2^1061221300 is an apocalyptic number.

1061221300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061221300 is an abundant number, since it is smaller than the sum of its proper divisors (1241629138).

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

1061221300 is a wasteful number, since it uses less digits than its factorization.

1061221300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10612227 (or 10612220 counting only the distinct ones).

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

The square root of 1061221300 is about 32576.3917584499. The cubic root of 1061221300 is about 1020.0042611638.

Adding to 1061221300 its reverse (31221601), we get a palindrome (1092442901).

The spelling of 1061221300 in words is "one billion, sixty-one million, two hundred twenty-one thousand, three hundred".