121210100201 has 4 divisors (see below), whose sum is σ = 121217127504. Its totient is φ = 121203072900.

The previous prime is 121210100197. The next prime is 121210100213. The reversal of 121210100201 is 102001012121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102001012121 = 38083 ⋅2678387.

It is a cyclic number.

It is not a de Polignac number, because 121210100201 - 2² = 121210100197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121210000201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3487715 + ... + 3522296.

It is an arithmetic number, because the mean of its divisors is an integer number (30304281876).

Almost surely, 2^121210100201 is an apocalyptic number.

It is an amenable number.

121210100201 is a deficient number, since it is larger than the sum of its proper divisors (7027303).

121210100201 is an equidigital number, since it uses as much as digits as its factorization.

121210100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027302.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121210100201 its reverse (102001012121), we get a palindrome (223211112322).

The spelling of 121210100201 in words is "one hundred twenty-one billion, two hundred ten million, one hundred thousand, two hundred one".