20021010102102 has 8 divisors (see below), whose sum is σ = 40042020204216. Its totient is φ = 6673670034032.

The previous prime is 20021010102101. The next prime is 20021010102103. The reversal of 20021010102102 is 20120101012002.

It is an interprime number because it is at equal distance from previous prime (20021010102101) and next prime (20021010102103).

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

20021010102102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021010102101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668417508503 + ... + 1668417508514.

It is an arithmetic number, because the mean of its divisors is an integer number (5005252525527).

Almost surely, 2^{20021010102102} is an apocalyptic number.

20021010102102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20021010102102 is a wasteful number, since it uses less digits than its factorization.

20021010102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336835017022.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20021010102102 its reverse (20120101012002), we get a palindrome (40141111114104).

The spelling of 20021010102102 in words is "twenty trillion, twenty-one billion, ten million, one hundred two thousand, one hundred two".