1211320100230 has 32 divisors (see below), whose sum is σ = 2227745358720. Its totient is φ = 474010613760.

The previous prime is 1211320100143. The next prime is 1211320100257. The reversal of 1211320100230 is 320010231121.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 507126 + ... + 1637014.

It is an arithmetic number, because the mean of its divisors is an integer number (69617042460).

Almost surely, 2^{1211320100230} is an apocalyptic number.

1211320100230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211320100230 is a deficient number, since it is larger than the sum of its proper divisors (1016425258490).

1211320100230 is a wasteful number, since it uses less digits than its factorization.

1211320100230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132224.

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

Adding to 1211320100230 its reverse (320010231121), we get a palindrome (1531330331351).

The spelling of 1211320100230 in words is "one trillion, two hundred eleven billion, three hundred twenty million, one hundred thousand, two hundred thirty".