12101021020202 has 4 divisors (see below), whose sum is σ = 18151531530306. Its totient is φ = 6050510510100.

The previous prime is 12101021020201. The next prime is 12101021020217. The reversal of 12101021020202 is 20202012010121.

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., 11300280604921 + 800740415281 = 3361589^2 + 894841^2 .

It is not an unprimeable number, because it can be changed into a prime (12101021020201) by changing a digit.

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, 3025255255049 + ... + 3025255255052.

Almost surely, 2^{12101021020202} is an apocalyptic number.

12101021020202 is a deficient number, since it is larger than the sum of its proper divisors (6050510510104).

12101021020202 is an equidigital number, since it uses as much as digits as its factorization.

12101021020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050510510103.

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

Adding to 12101021020202 its reverse (20202012010121), we get a palindrome (32303033030323).

The spelling of 12101021020202 in words is "twelve trillion, one hundred one billion, twenty-one million, twenty thousand, two hundred two".