1211310320229 has 12 divisors (see below), whose sum is σ = 1806111445632. Its totient is φ = 781490529000.

The previous prime is 1211310320197. The next prime is 1211310320239. The reversal of 1211310320229 is 9220230131121.

1211310320229 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 310 + 320 + 2 + 29 = 666.

It is not a de Polignac number, because 1211310320229 - 2⁵ = 1211310320197 is a prime.

It is a super-2 number, since 2×1211310320229² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211310320239) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2170806747 + ... + 2170807304.

It is an arithmetic number, because the mean of its divisors is an integer number (150509287136).

Almost surely, 2^{1211310320229} is an apocalyptic number.

It is an amenable number.

1211310320229 is a deficient number, since it is larger than the sum of its proper divisors (594801125403).

1211310320229 is a wasteful number, since it uses less digits than its factorization.

1211310320229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341614088 (or 4341614085 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 1211310320229 in words is "one trillion, two hundred eleven billion, three hundred ten million, three hundred twenty thousand, two hundred twenty-nine".