20110202001 has 48 divisors (see below), whose sum is σ = 30305516800. Its totient is φ = 12838984704.

The previous prime is 20110201949. The next prime is 20110202017. The reversal of 20110202001 is 10020201102.

It is not a de Polignac number, because 20110202001 - 2¹⁰ = 20110200977 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110202081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9969345 + ... + 9971361.

Almost surely, 2^20110202001 is an apocalyptic number.

It is an amenable number.

20110202001 is a deficient number, since it is larger than the sum of its proper divisors (10195314799).

20110202001 is a wasteful number, since it uses less digits than its factorization.

20110202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518 (or 2515 counting only the distinct ones).

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

Adding to 20110202001 its reverse (10020201102), we get a palindrome (30130403103).

It can be divided in two parts, 2011020 and 2001, that added together give a triangular number (2013021 = T₂₀₀₆).

The spelling of 20110202001 in words is "twenty billion, one hundred ten million, two hundred two thousand, one".