1121211211430 has 32 divisors (see below), whose sum is σ = 2079360284544. Its totient is φ = 435057796096.

The previous prime is 1121211211427. The next prime is 1121211211469. The reversal of 1121211211430 is 341121121211.

It is a happy number.

It is a super-2 number, since 2×1121211211430² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10502447 + ... + 10608666.

It is an arithmetic number, because the mean of its divisors is an integer number (64980008892).

Almost surely, 2^{1121211211430} is an apocalyptic number.

1121211211430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121211211430 is a deficient number, since it is larger than the sum of its proper divisors (958149073114).

1121211211430 is a wasteful number, since it uses less digits than its factorization.

1121211211430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21111280.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 1121211211430 its reverse (341121121211), we get a palindrome (1462332332641).

The spelling of 1121211211430 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, two hundred eleven thousand, four hundred thirty".