20012221012202 has 8 divisors (see below), whose sum is σ = 31784115725316. Its totient is φ = 9417515770432.

The previous prime is 20012221012177. The next prime is 20012221012211. The reversal of 20012221012202 is 20221012221002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19415559003481 + 596662008721 = 4406309^2 + 772439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294297367793 + ... + 294297367860.

Almost surely, 2^{20012221012202} is an apocalyptic number.

20012221012202 is a deficient number, since it is larger than the sum of its proper divisors (11771894713114).

20012221012202 is a wasteful number, since it uses less digits than its factorization.

20012221012202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588594735672.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20012221012202 its reverse (20221012221002), we get a palindrome (40233233233204).

The spelling of 20012221012202 in words is "twenty trillion, twelve billion, two hundred twenty-one million, twelve thousand, two hundred two".