20870236101 has 96 divisors (see below), whose sum is σ = 34895024640. Its totient is φ = 10908000000.

The previous prime is 20870236097. The next prime is 20870236103. The reversal of 20870236101 is 10163207802.

It is not a de Polignac number, because 20870236101 - 2² = 20870236097 is a prime.

It is a super-2 number, since 2×20870236101² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20870236103) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 83148226 + ... + 83148476.

It is an arithmetic number, because the mean of its divisors is an integer number (363489840).

Almost surely, 2^20870236101 is an apocalyptic number.

It is an amenable number.

20870236101 is a deficient number, since it is larger than the sum of its proper divisors (14024788539).

20870236101 is a wasteful number, since it uses less digits than its factorization.

20870236101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The spelling of 20870236101 in words is "twenty billion, eight hundred seventy million, two hundred thirty-six thousand, one hundred one".