1201212320131 has 16 divisors (see below), whose sum is σ = 1283162701824. Its totient is φ = 1120554290304.

The previous prime is 1201212320129. The next prime is 1201212320141. The reversal of 1201212320131 is 1310232121021.

It is a cyclic number.

It is not a de Polignac number, because 1201212320131 - 2¹ = 1201212320129 is a prime.

It is a super-2 number, since 2×1201212320131² (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 = 1201212320099 and 1201212320108.

It is not an unprimeable number, because it can be changed into a prime (1201212320111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426366 + ... + 1607548.

It is an arithmetic number, because the mean of its divisors is an integer number (80197668864).

Almost surely, 2^{1201212320131} is an apocalyptic number.

1201212320131 is a deficient number, since it is larger than the sum of its proper divisors (81950381693).

1201212320131 is a wasteful number, since it uses less digits than its factorization.

1201212320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181730.

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

Adding to 1201212320131 its reverse (1310232121021), we get a palindrome (2511444441152).

The spelling of 1201212320131 in words is "one trillion, two hundred one billion, two hundred twelve million, three hundred twenty thousand, one hundred thirty-one".