121010020121001 has 32 divisors (see below), whose sum is σ = 176588333488512. Its totient is φ = 73100566978560.

The previous prime is 121010020120931. The next prime is 121010020121057. The reversal of 121010020121001 is 100121020010121.

It is not a de Polignac number, because 121010020121001 - 2¹⁰ = 121010020119977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121010020121101) 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, 18495081 + ... + 24167913.

It is an arithmetic number, because the mean of its divisors is an integer number (5518385421516).

Almost surely, 2^{121010020121001} is an apocalyptic number.

121010020121001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121010020121001 is a deficient number, since it is larger than the sum of its proper divisors (55578313367511).

121010020121001 is a wasteful number, since it uses less digits than its factorization.

121010020121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5674953.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121010020121001 its reverse (100121020010121), we get a palindrome (221131040131122).

The spelling of 121010020121001 in words is "one hundred twenty-one trillion, ten billion, twenty million, one hundred twenty-one thousand, one".