1211101330 has 16 divisors (see below), whose sum is σ = 2187690624. Its totient is φ = 482727600.

The previous prime is 1211101327. The next prime is 1211101349. The reversal of 1211101330 is 331011121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211101330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211146 + ... + 216805.

It is an arithmetic number, because the mean of its divisors is an integer number (136730664).

Almost surely, 2^1211101330 is an apocalyptic number.

1211101330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211101330 is a deficient number, since it is larger than the sum of its proper divisors (976589294).

1211101330 is a wasteful number, since it uses less digits than its factorization.

1211101330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428241.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1211101330 is about 34800.8811670050. The cubic root of 1211101330 is about 1065.9254389240.

Adding to 1211101330 its reverse (331011121), we get a palindrome (1542112451).

The spelling of 1211101330 in words is "one billion, two hundred eleven million, one hundred one thousand, three hundred thirty".