20021311210102 has 8 divisors (see below), whose sum is σ = 30323539308816. Its totient is φ = 9913464773832.

The previous prime is 20021311209989. The next prime is 20021311210169. The reversal of 20021311210102 is 20101211312002.

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

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 48595415353 + ... + 48595415764.

It is an arithmetic number, because the mean of its divisors is an integer number (3790442413602).

Almost surely, 2^{20021311210102} is an apocalyptic number.

20021311210102 is a deficient number, since it is larger than the sum of its proper divisors (10302228098714).

20021311210102 is a wasteful number, since it uses less digits than its factorization.

20021311210102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97190831222.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20021311210102 its reverse (20101211312002), we get a palindrome (40122522522104).

The spelling of 20021311210102 in words is "twenty trillion, twenty-one billion, three hundred eleven million, two hundred ten thousand, one hundred two".