1201421340131 has 32 divisors (see below), whose sum is σ = 1286291324928. Its totient is φ = 1120226073120.

The previous prime is 1201421340127. The next prime is 1201421340157. The reversal of 1201421340131 is 1310431241021.

It is a cyclic number.

It is not a de Polignac number, because 1201421340131 - 2² = 1201421340127 is a prime.

It is a super-2 number, since 2×1201421340131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1201421340097 and 1201421340106.

It is not an unprimeable number, because it can be changed into a prime (1201421342131) 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 31 ways as a sum of consecutive naturals, for example, 209194646 + ... + 209200388.

It is an arithmetic number, because the mean of its divisors is an integer number (40196603904).

Almost surely, 2^{1201421340131} is an apocalyptic number.

1201421340131 is a deficient number, since it is larger than the sum of its proper divisors (84869984797).

1201421340131 is a wasteful number, since it uses less digits than its factorization.

1201421340131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8031.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1201421340131 its reverse (1310431241021), we get a palindrome (2511852581152).

The spelling of 1201421340131 in words is "one trillion, two hundred one billion, four hundred twenty-one million, three hundred forty thousand, one hundred thirty-one".