121210120101 has 16 divisors (see below), whose sum is σ = 184806195200. Its totient is φ = 69223528368.

The previous prime is 121210120051. The next prime is 121210120121. The reversal of 121210120101 is 101021012121.

It is not a de Polignac number, because 121210120101 - 2⁷ = 121210119973 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 (121210120121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1603741 + ... + 1677618.

It is an arithmetic number, because the mean of its divisors is an integer number (11550387200).

Almost surely, 2^121210120101 is an apocalyptic number.

It is an amenable number.

121210120101 is a deficient number, since it is larger than the sum of its proper divisors (63596075099).

121210120101 is a wasteful number, since it uses less digits than its factorization.

121210120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283128.

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

Adding to 121210120101 its reverse (101021012121), we get a palindrome (222231132222).

The spelling of 121210120101 in words is "one hundred twenty-one billion, two hundred ten million, one hundred twenty thousand, one hundred one".