20102011020101 has 4 divisors (see below), whose sum is σ = 20102027025612. Its totient is φ = 20101995014592.

The previous prime is 20102011020097. The next prime is 20102011020163. The reversal of 20102011020101 is 10102011020102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13454766869476 + 6647244150625 = 3668074^2 + 2578225^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102011020101 - 2² = 20102011020097 is a prime.

It is a super-3 number, since 3×20102011020101³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102011020601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5941946 + ... + 8689691.

It is an arithmetic number, because the mean of its divisors is an integer number (5025506756403).

Almost surely, 2^{20102011020101} is an apocalyptic number.

It is an amenable number.

20102011020101 is a deficient number, since it is larger than the sum of its proper divisors (16005511).

20102011020101 is a wasteful number, since it uses less digits than its factorization.

20102011020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16005510.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20102011020101 its reverse (10102011020102), we get a palindrome (30204022040203).

Subtracting from 20102011020101 its reverse (10102011020102), we obtain a palindrome (9999999999999).

The spelling of 20102011020101 in words is "twenty trillion, one hundred two billion, eleven million, twenty thousand, one hundred one".