1211020100330 has 96 divisors (see below), whose sum is σ = 2356889618160. Its totient is φ = 447806177280.

The previous prime is 1211020100327. The next prime is 1211020100369. The reversal of 1211020100330 is 330010201121.

It can be written as a sum of positive squares in 24 ways, for example, as 80113339849 + 1130906760481 = 283043^2 + 1063441^2 .

It is a super-2 number, since 2×1211020100330² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135562544 + ... + 135571476.

Almost surely, 2^{1211020100330} is an apocalyptic number.

1211020100330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211020100330 is a deficient number, since it is larger than the sum of its proper divisors (1145869517830).

1211020100330 is a wasteful number, since it uses less digits than its factorization.

1211020100330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9804 (or 9787 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1211020100330 its reverse (330010201121), we get a palindrome (1541030301451).

The spelling of 1211020100330 in words is "one trillion, two hundred eleven billion, twenty million, one hundred thousand, three hundred thirty".