20101201002 has 16 divisors (see below), whose sum is σ = 44669335680. Its totient is φ = 6700400316.

The previous prime is 20101200943. The next prime is 20101201007. The reversal of 20101201002 is 20010210102.

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 (20101201007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186122178 + ... + 186122285.

It is an arithmetic number, because the mean of its divisors is an integer number (2791833480).

Almost surely, 2^20101201002 is an apocalyptic number.

20101201002 is an abundant number, since it is smaller than the sum of its proper divisors (24568134678).

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

20101201002 is a wasteful number, since it uses less digits than its factorization.

20101201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372244474 (or 372244468 counting only the distinct ones).

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

Adding to 20101201002 its reverse (20010210102), we get a palindrome (40111411104).

The spelling of 20101201002 in words is "twenty billion, one hundred one million, two hundred one thousand, two".