121001221202 has 4 divisors (see below), whose sum is σ = 181501831806. Its totient is φ = 60500610600.

The previous prime is 121001221199. The next prime is 121001221279. The reversal of 121001221202 is 202122100121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 202122100121 = 67 ⋅3016747763.

It can be written as a sum of positive squares in only one way, i.e., 120541590481 + 459630721 = 347191^2 + 21439^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30250305299 + ... + 30250305302.

Almost surely, 2^121001221202 is an apocalyptic number.

121001221202 is a deficient number, since it is larger than the sum of its proper divisors (60500610604).

121001221202 is an equidigital number, since it uses as much as digits as its factorization.

121001221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60500610603.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121001221202 its reverse (202122100121), we get a palindrome (323123321323).

The spelling of 121001221202 in words is "one hundred twenty-one billion, one million, two hundred twenty-one thousand, two hundred two".