121210011100101 has 128 divisors (see below), whose sum is σ = 204837609480192. Its totient is φ = 61925326848000.

The previous prime is 121210011100091. The next prime is 121210011100121. The reversal of 121210011100101 is 101001110012121.

It is not a de Polignac number, because 121210011100101 - 2⁷ = 121210011099973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210011100121) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12499738485 + ... + 12499748181.

It is an arithmetic number, because the mean of its divisors is an integer number (1600293824064).

Almost surely, 2^{121210011100101} is an apocalyptic number.

121210011100101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121210011100101 is a deficient number, since it is larger than the sum of its proper divisors (83627598380091).

121210011100101 is a wasteful number, since it uses less digits than its factorization.

121210011100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11603.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121210011100101 its reverse (101001110012121), we get a palindrome (222211121112222).

The spelling of 121210011100101 in words is "one hundred twenty-one trillion, two hundred ten billion, eleven million, one hundred thousand, one hundred one".