1211100321130 has 64 divisors (see below), whose sum is σ = 2516472541440. Its totient is φ = 411062206464.

The previous prime is 1211100320953. The next prime is 1211100321149. The reversal of 1211100321130 is 311230011121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10646634 + ... + 10759786.

It is an arithmetic number, because the mean of its divisors is an integer number (39319883460).

Almost surely, 2^{1211100321130} is an apocalyptic number.

1211100321130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211100321130 is an abundant number, since it is smaller than the sum of its proper divisors (1305372220310).

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

1211100321130 is a wasteful number, since it uses less digits than its factorization.

1211100321130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114703.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1211100321130 its reverse (311230011121), we get a palindrome (1522330332251).

The spelling of 1211100321130 in words is "one trillion, two hundred eleven billion, one hundred million, three hundred twenty-one thousand, one hundred thirty".