121021102313201 has 16 divisors (see below), whose sum is σ = 125427568460880. Its totient is φ = 116687342776320.

The previous prime is 121021102313197. The next prime is 121021102313219. The reversal of 121021102313201 is 102313201120121.

It can be written as a sum of positive squares in 8 ways, for example, as 2054417688976 + 118966684624225 = 1433324^2 + 10907185^2 .

It is a cyclic number.

It is not a de Polignac number, because 121021102313201 - 2² = 121021102313197 is a prime.

It is a super-2 number, since 2×121021102313201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121021102316201) 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, 18640286 + ... + 24279671.

It is an arithmetic number, because the mean of its divisors is an integer number (7839223028805).

Almost surely, 2^{121021102313201} is an apocalyptic number.

It is an amenable number.

121021102313201 is a deficient number, since it is larger than the sum of its proper divisors (4406466147679).

121021102313201 is an equidigital number, since it uses as much as digits as its factorization.

121021102313201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42920804.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121021102313201 its reverse (102313201120121), we get a palindrome (223334303433322).

The spelling of 121021102313201 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred two million, three hundred thirteen thousand, two hundred one".