20010002100102 has 72 divisors (see below), whose sum is σ = 50553739618200. Its totient is φ = 5703498618048.

The previous prime is 20010002100083. The next prime is 20010002100217. The reversal of 20010002100102 is 20100120001002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26703327 + ... + 27442442.

It is an arithmetic number, because the mean of its divisors is an integer number (702135272475).

Almost surely, 2^{20010002100102} is an apocalyptic number.

20010002100102 is an abundant number, since it is smaller than the sum of its proper divisors (30543737518098).

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

20010002100102 is a wasteful number, since it uses less digits than its factorization.

20010002100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54146210 (or 54146200 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20010002100102 its reverse (20100120001002), we get a palindrome (40110122101104).

The spelling of 20010002100102 in words is "twenty trillion, ten billion, two million, one hundred thousand, one hundred two".