121021310112001 has 32 divisors (see below), whose sum is σ = 131247149685120. Its totient is φ = 110927672640000.

The previous prime is 121021310111951. The next prime is 121021310112011. The reversal of 121021310112001 is 100211013120121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121021310112001 - 2²⁷ = 121021175894273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121021310112011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20862143301 + ... + 20862149101.

It is an arithmetic number, because the mean of its divisors is an integer number (4101473427660).

Almost surely, 2^{121021310112001} is an apocalyptic number.

It is an amenable number.

121021310112001 is a deficient number, since it is larger than the sum of its proper divisors (10225839573119).

121021310112001 is a wasteful number, since it uses less digits than its factorization.

121021310112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13057.

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

Adding to 121021310112001 its reverse (100211013120121), we get a palindrome (221232323232122).

The spelling of 121021310112001 in words is "one hundred twenty-one trillion, twenty-one billion, three hundred ten million, one hundred twelve thousand, one".