1020020100102 has 40 divisors (see below), whose sum is σ = 2285677851600. Its totient is φ = 339995207376.

The previous prime is 1020020100083. The next prime is 1020020100109. The reversal of 1020020100102 is 2010010200201.

It is a super-2 number, since 2×1020020100102² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020020100109) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5663799 + ... + 5841117.

It is an arithmetic number, because the mean of its divisors is an integer number (57141946290).

Almost surely, 2^{1020020100102} is an apocalyptic number.

1020020100102 is an abundant number, since it is smaller than the sum of its proper divisors (1265657751498).

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

1020020100102 is a wasteful number, since it uses less digits than its factorization.

1020020100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212842 (or 212833 counting only the distinct ones).

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

Adding to 1020020100102 its reverse (2010010200201), we get a palindrome (3030030300303).

The spelling of 1020020100102 in words is "one trillion, twenty billion, twenty million, one hundred thousand, one hundred two".