20011211210202 has 32 divisors (see below), whose sum is σ = 40778517802752. Its totient is φ = 6544393737024.

The previous prime is 20011211210197. The next prime is 20011211210219. The reversal of 20011211210202 is 20201211211002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13275903 + ... + 14706189.

It is an arithmetic number, because the mean of its divisors is an integer number (1274328681336).

Almost surely, 2^{20011211210202} is an apocalyptic number.

20011211210202 is an abundant number, since it is smaller than the sum of its proper divisors (20767306592550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20011211210202 is a wasteful number, since it uses less digits than its factorization.

20011211210202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474342.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20011211210202 its reverse (20201211211002), we get a palindrome (40212422421204).

The spelling of 20011211210202 in words is "twenty trillion, eleven billion, two hundred eleven million, two hundred ten thousand, two hundred two".