131121211201 has 16 divisors (see below), whose sum is σ = 142725499200. Its totient is φ = 120057208128.

The previous prime is 131121211189. The next prime is 131121211217. The reversal of 131121211201 is 102112121131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131121211201 - 2¹³ = 131121203009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131121211231) 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, 904246 + ... + 1039183.

It is an arithmetic number, because the mean of its divisors is an integer number (8920343700).

Almost surely, 2^131121211201 is an apocalyptic number.

It is an amenable number.

131121211201 is a deficient number, since it is larger than the sum of its proper divisors (11604287999).

131121211201 is a wasteful number, since it uses less digits than its factorization.

131121211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943568.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 131121211201 its reverse (102112121131), we get a palindrome (233233332332).

The spelling of 131121211201 in words is "one hundred thirty-one billion, one hundred twenty-one million, two hundred eleven thousand, two hundred one".