2011020102 has 128 divisors (see below), whose sum is σ = 5558246400. Its totient is φ = 524786688.

The previous prime is 2011020061. The next prime is 2011020113. The reversal of 2011020102 is 2010201102.

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 63 ways as a sum of consecutive naturals, for example, 474549 + ... + 478767.

It is an arithmetic number, because the mean of its divisors is an integer number (43423800).

Almost surely, 2^2011020102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011020102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2779123200).

2011020102 is an abundant number, since it is smaller than the sum of its proper divisors (3547226298).

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

2011020102 is a wasteful number, since it uses less digits than its factorization.

2011020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4347 (or 4341 counting only the distinct ones).

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

The square root of 2011020102 is about 44844.3987806727. The cubic root of 2011020102 is about 1262.2308890451.

Adding to 2011020102 its reverse (2010201102), we get a palindrome (4021221204).

It can be divided in two parts, 201 and 1020102, that multiplied together give a palindrome (205040502).

The spelling of 2011020102 in words is "two billion, eleven million, twenty thousand, one hundred two".