1200211322131 has 4 divisors (see below), whose sum is σ = 1200454728264. Its totient is φ = 1199967916000.

The previous prime is 1200211322071. The next prime is 1200211322143. The reversal of 1200211322131 is 1312231120021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200211322131 - 2¹⁹ = 1200210797843 is a prime.

It is a super-2 number, since 2×1200211322131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200211322099 and 1200211322108.

It is not an unprimeable number, because it can be changed into a prime (1200211322161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121695670 + ... + 121705531.

It is an arithmetic number, because the mean of its divisors is an integer number (300113682066).

Almost surely, 2^{1200211322131} is an apocalyptic number.

1200211322131 is a deficient number, since it is larger than the sum of its proper divisors (243406133).

1200211322131 is an equidigital number, since it uses as much as digits as its factorization.

1200211322131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243406132.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1200211322131 its reverse (1312231120021), we get a palindrome (2512442442152).

The spelling of 1200211322131 in words is "one trillion, two hundred billion, two hundred eleven million, three hundred twenty-two thousand, one hundred thirty-one".