121331311201 has 8 divisors (see below), whose sum is σ = 128471862024. Its totient is φ = 114191139840.

The previous prime is 121331311181. The next prime is 121331311237. The reversal of 121331311201 is 102113133121.

It can be written as a sum of positive squares in 4 ways, for example, as 793886976 + 120537424225 = 28176^2 + 347185^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121331311201 - 2¹⁵ = 121331278433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121331611201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810261 + ... + 948253.

It is an arithmetic number, because the mean of its divisors is an integer number (16058982753).

Almost surely, 2^121331311201 is an apocalyptic number.

It is an amenable number.

121331311201 is a deficient number, since it is larger than the sum of its proper divisors (7140550823).

121331311201 is a wasteful number, since it uses less digits than its factorization.

121331311201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189731.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 121331311201 its reverse (102113133121), we get a palindrome (223444444322).

The spelling of 121331311201 in words is "one hundred twenty-one billion, three hundred thirty-one million, three hundred eleven thousand, two hundred one".