1200422131 has 2 divisors, whose sum is σ = 1200422132. Its totient is φ = 1200422130.

The previous prime is 1200422129. The next prime is 1200422137. The reversal of 1200422131 is 1312240021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200422131 - 2¹ = 1200422129 is a prime.

It is a super-2 number, since 2×1200422131² = 2882026585189162322, which contains 22 as substring.

Together with 1200422129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1200422137) 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 as a sum of consecutive naturals, namely, 600211065 + 600211066.

It is an arithmetic number, because the mean of its divisors is an integer number (600211066).

Almost surely, 2^1200422131 is an apocalyptic number.

1200422131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200422131 is an equidigital number, since it uses as much as digits as its factorization.

1200422131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1200422131 is about 34647.1085517969. The cubic root of 1200422131 is about 1062.7831604423.

Adding to 1200422131 its reverse (1312240021), we get a palindrome (2512662152).

The spelling of 1200422131 in words is "one billion, two hundred million, four hundred twenty-two thousand, one hundred thirty-one".