20101001202 has 128 divisors (see below), whose sum is σ = 47900160000. Its totient is φ = 6232786560.

The previous prime is 20101001201. The next prime is 20101001209. The reversal of 20101001202 is 20210010102.

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

It is not an unprimeable number, because it can be changed into a prime (20101001201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30501949 + ... + 30502607.

It is an arithmetic number, because the mean of its divisors is an integer number (374220000).

Almost surely, 2^20101001202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20101001202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23950080000).

20101001202 is an abundant number, since it is smaller than the sum of its proper divisors (27799158798).

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

20101001202 is a wasteful number, since it uses less digits than its factorization.

20101001202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333 (or 1327 counting only the distinct ones).

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

Adding to 20101001202 its reverse (20210010102), we get a palindrome (40311011304).

The spelling of 20101001202 in words is "twenty billion, one hundred one million, one thousand, two hundred two".