1121211211431 has 16 divisors (see below), whose sum is σ = 1517469902208. Its totient is φ = 736216404000.

The previous prime is 1121211211427. The next prime is 1121211211469. The reversal of 1121211211431 is 1341121121211.

It is not a de Polignac number, because 1121211211431 - 2² = 1121211211427 is a prime.

It is a super-2 number, since 2×1121211211431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121211211398 and 1121211211407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121211211031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1093081 + ... + 1853981.

It is an arithmetic number, because the mean of its divisors is an integer number (94841868888).

Almost surely, 2^{1121211211431} is an apocalyptic number.

1121211211431 is a deficient number, since it is larger than the sum of its proper divisors (396258690777).

1121211211431 is an equidigital number, since it uses as much as digits as its factorization.

1121211211431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768302.

The product of its digits is 96, while the sum is 21.

Adding to 1121211211431 its reverse (1341121121211), we get a palindrome (2462332332642).

The spelling of 1121211211431 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, two hundred eleven thousand, four hundred thirty-one".