121210002101 has 4 divisors (see below), whose sum is σ = 121244726304. Its totient is φ = 121175277900.

The previous prime is 121210002079. The next prime is 121210002119. The reversal of 121210002101 is 101200012121.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121210002101 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 (121210002191) 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, 17356865 + ... + 17363846.

It is an arithmetic number, because the mean of its divisors is an integer number (30311181576).

Almost surely, 2^121210002101 is an apocalyptic number.

It is an amenable number.

121210002101 is a deficient number, since it is larger than the sum of its proper divisors (34724203).

121210002101 is an equidigital number, since it uses as much as digits as its factorization.

121210002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34724202.

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

Adding to 121210002101 its reverse (101200012121), we get a palindrome (222410014222).

The spelling of 121210002101 in words is "one hundred twenty-one billion, two hundred ten million, two thousand, one hundred one".