121010100120101 has 4 divisors (see below), whose sum is σ = 121010705016972. Its totient is φ = 121009495223232.

The previous prime is 121010100120073. The next prime is 121010100120109. The reversal of 121010100120101 is 101021001010121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110464850571076 + 10545249549025 = 10510226^2 + 3247345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121010100120101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010100120109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302148260 + ... + 302548493.

It is an arithmetic number, because the mean of its divisors is an integer number (30252676254243).

Almost surely, 2^{121010100120101} is an apocalyptic number.

It is an amenable number.

121010100120101 is a deficient number, since it is larger than the sum of its proper divisors (604896871).

121010100120101 is an equidigital number, since it uses as much as digits as its factorization.

121010100120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604896870.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121010100120101 its reverse (101021001010121), we get a palindrome (222031101130222).

The spelling of 121010100120101 in words is "one hundred twenty-one trillion, ten billion, one hundred million, one hundred twenty thousand, one hundred one".