121210110101 has 32 divisors (see below), whose sum is σ = 137819750400. Its totient is φ = 105979769280.

The previous prime is 121210110083. The next prime is 121210110113. The reversal of 121210110101 is 101011012121.

It is a cyclic number.

It is not a de Polignac number, because 121210110101 - 2³⁰ = 120136368277 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 (121210140101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30552620 + ... + 30556586.

It is an arithmetic number, because the mean of its divisors is an integer number (4306867200).

Almost surely, 2^121210110101 is an apocalyptic number.

It is an amenable number.

121210110101 is a deficient number, since it is larger than the sum of its proper divisors (16609640299).

121210110101 is a wasteful number, since it uses less digits than its factorization.

121210110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6449.

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

Adding to 121210110101 its reverse (101011012121), we get a palindrome (222221122222).

The spelling of 121210110101 in words is "one hundred twenty-one billion, two hundred ten million, one hundred ten thousand, one hundred one".