1201331312029 has 4 divisors (see below), whose sum is σ = 1264559275840. Its totient is φ = 1138103348220.

The previous prime is 1201331312023. The next prime is 1201331312047. The reversal of 1201331312029 is 9202131331021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1201331312029 - 2⁹ = 1201331311517 is a prime.

It is a super-2 number, since 2×1201331312029² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1201331311988 and 1201331312006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201331312023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31613981877 + ... + 31613981914.

It is an arithmetic number, because the mean of its divisors is an integer number (316139818960).

Almost surely, 2^{1201331312029} is an apocalyptic number.

1201331312029 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1201331312029 is a deficient number, since it is larger than the sum of its proper divisors (63227963811).

1201331312029 is an equidigital number, since it uses as much as digits as its factorization.

1201331312029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63227963810.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 1201331312029 in words is "one trillion, two hundred one billion, three hundred thirty-one million, three hundred twelve thousand, twenty-nine".