1221335044730 has 16 divisors (see below), whose sum is σ = 2198446746120. Its totient is φ = 488524314432.

The previous prime is 1221335044729. The next prime is 1221335044733. The reversal of 1221335044730 is 374405331221.

It can be written as a sum of positive squares in 4 ways, for example, as 1114377920881 + 106957123849 = 1055641^2 + 327043^2 .

It is a super-2 number, since 2×1221335044730² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1221335044733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672845 + ... + 1701584.

Almost surely, 2^{1221335044730} is an apocalyptic number.

1221335044730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221335044730 is a deficient number, since it is larger than the sum of its proper divisors (977111701390).

1221335044730 is a wasteful number, since it uses less digits than its factorization.

1221335044730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425873.

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 1221335044730 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-five million, forty-four thousand, seven hundred thirty".