121220000210001 has 64 divisors (see below), whose sum is σ = 202480636723200. Its totient is φ = 62668145835840.

The previous prime is 121220000209963. The next prime is 121220000210009. The reversal of 121220000210001 is 100012000022121.

It is not a de Polignac number, because 121220000210001 - 2¹⁰ = 121220000208977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121220000210009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58705300 + ... + 60735098.

It is an arithmetic number, because the mean of its divisors is an integer number (3163759948800).

Almost surely, 2^{121220000210001} is an apocalyptic number.

121220000210001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121220000210001 is a deficient number, since it is larger than the sum of its proper divisors (81260636513199).

121220000210001 is a wasteful number, since it uses less digits than its factorization.

121220000210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031066.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121220000210001 its reverse (100012000022121), we get a palindrome (221232000232122).

The spelling of 121220000210001 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred ten thousand, one".