12221000020202 has 4 divisors (see below), whose sum is σ = 18331500030306. Its totient is φ = 6110500010100.

The previous prime is 12221000020189. The next prime is 12221000020223. The reversal of 12221000020202 is 20202000012221.

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., 11277030380641 + 943969639561 = 3358129^2 + 971581^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055250005049 + ... + 3055250005052.

Almost surely, 2^{12221000020202} is an apocalyptic number.

12221000020202 is a deficient number, since it is larger than the sum of its proper divisors (6110500010104).

12221000020202 is an equidigital number, since it uses as much as digits as its factorization.

12221000020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110500010103.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12221000020202 its reverse (20202000012221), we get a palindrome (32423000032423).

The spelling of 12221000020202 in words is "twelve trillion, two hundred twenty-one billion, twenty thousand, two hundred two".