10121211220202 has 4 divisors (see below), whose sum is σ = 15181816830306. Its totient is φ = 5060605610100.

The previous prime is 10121211220187. The next prime is 10121211220279. The reversal of 10121211220202 is 20202211212101.

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., 9792399576961 + 328811643241 = 3129281^2 + 573421^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2530302805049 + ... + 2530302805052.

Almost surely, 2^{10121211220202} is an apocalyptic number.

10121211220202 is a deficient number, since it is larger than the sum of its proper divisors (5060605610104).

10121211220202 is an equidigital number, since it uses as much as digits as its factorization.

10121211220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060605610103.

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

Adding to 10121211220202 its reverse (20202211212101), we get a palindrome (30323422432303).

The spelling of 10121211220202 in words is "ten trillion, one hundred twenty-one billion, two hundred eleven million, two hundred twenty thousand, two hundred two".