20112102101 has 8 divisors (see below), whose sum is σ = 24753356544. Its totient is φ = 15912871920.

The previous prime is 20112102061. The next prime is 20112102113. The reversal of 20112102101 is 10120121102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20112102101 is a prime.

It is a super-2 number, since 2×20112102101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112102181) 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, 110505965 + ... + 110506146.

It is an arithmetic number, because the mean of its divisors is an integer number (3094169568).

Almost surely, 2^20112102101 is an apocalyptic number.

It is an amenable number.

20112102101 is a deficient number, since it is larger than the sum of its proper divisors (4641254443).

20112102101 is a wasteful number, since it uses less digits than its factorization.

20112102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221012131.

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

Adding to 20112102101 its reverse (10120121102), we get a palindrome (30232223203).

The spelling of 20112102101 in words is "twenty billion, one hundred twelve million, one hundred two thousand, one hundred one".