20021021211102 has 16 divisors (see below), whose sum is σ = 40639684847232. Its totient is φ = 6574066666200.

The previous prime is 20021021211031. The next prime is 20021021211151. The reversal of 20021021211102 is 20111212012002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24901767274 + ... + 24901768077.

It is an arithmetic number, because the mean of its divisors is an integer number (2539980302952).

Almost surely, 2^{20021021211102} is an apocalyptic number.

20021021211102 is an abundant number, since it is smaller than the sum of its proper divisors (20618663636130).

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

20021021211102 is a wasteful number, since it uses less digits than its factorization.

20021021211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49803535423.

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

Adding to 20021021211102 its reverse (20111212012002), we get a palindrome (40132233223104).

The spelling of 20021021211102 in words is "twenty trillion, twenty-one billion, twenty-one million, two hundred eleven thousand, one hundred two".