121210122101 has 2 divisors, whose sum is σ = 121210122102. Its totient is φ = 121210122100.

The previous prime is 121210122083. The next prime is 121210122127. The reversal of 121210122101 is 101221012121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96178135876 + 25031986225 = 310126^2 + 158215^2 .

It is a cyclic number.

It is not a de Polignac number, because 121210122101 - 2¹⁴ = 121210105717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121210122181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605061050 + 60605061051.

It is an arithmetic number, because the mean of its divisors is an integer number (60605061051).

Almost surely, 2^121210122101 is an apocalyptic number.

It is an amenable number.

121210122101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210122101 is an equidigital number, since it uses as much as digits as its factorization.

121210122101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121210122101 its reverse (101221012121), we get a palindrome (222431134222).

The spelling of 121210122101 in words is "one hundred twenty-one billion, two hundred ten million, one hundred twenty-two thousand, one hundred one".