20110201002 has 24 divisors (see below), whose sum is σ = 44749728036. Its totient is φ = 6522227136.

The previous prime is 20110200997. The next prime is 20110201009. The reversal of 20110201002 is 20010201102.

It can be written as a sum of positive squares in 2 ways, for example, as 19190837961 + 919363041 = 138531^2 + 30321^2 .

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 (20110201009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15097083 + ... + 15098414.

Almost surely, 2^20110201002 is an apocalyptic number.

20110201002 is an abundant number, since it is smaller than the sum of its proper divisors (24639527034).

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

20110201002 is a wasteful number, since it uses less digits than its factorization.

20110201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30195542 (or 30195539 counting only the distinct ones).

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

Adding to 20110201002 its reverse (20010201102), we get a palindrome (40120402104).

The spelling of 20110201002 in words is "twenty billion, one hundred ten million, two hundred one thousand, two".