121210201002122 has 4 divisors (see below), whose sum is σ = 181815301503186. Its totient is φ = 60605100501060.

The previous prime is 121210201002119. The next prime is 121210201002133. The reversal of 121210201002122 is 221200102012121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 102874343004601 + 18335857997521 = 10142699^2 + 4282039^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121210201002122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30302550250529 + ... + 30302550250532.

Almost surely, 2^{121210201002122} is an apocalyptic number.

121210201002122 is a deficient number, since it is larger than the sum of its proper divisors (60605100501064).

121210201002122 is an equidigital number, since it uses as much as digits as its factorization.

121210201002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60605100501063.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121210201002122 its reverse (221200102012121), we get a palindrome (342410303014243).

The spelling of 121210201002122 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred one million, two thousand, one hundred twenty-two".