20101102211 has 8 divisors (see below), whose sum is σ = 20160521520. Its totient is φ = 20041717248.

The previous prime is 20101102207. The next prime is 20101102279. The reversal of 20101102211 is 11220110102.

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

It is a cyclic number.

It is not a de Polignac number, because 20101102211 - 2² = 20101102207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101102192 and 20101102201.

It is not an unprimeable number, because it can be changed into a prime (20101102111) 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, 1591955 + ... + 1604531.

It is an arithmetic number, because the mean of its divisors is an integer number (2520065190).

Almost surely, 2^20101102211 is an apocalyptic number.

20101102211 is a deficient number, since it is larger than the sum of its proper divisors (59419309).

20101102211 is a wasteful number, since it uses less digits than its factorization.

20101102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17173.

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

Adding to 20101102211 its reverse (11220110102), we get a palindrome (31321212313).

The spelling of 20101102211 in words is "twenty billion, one hundred one million, one hundred two thousand, two hundred eleven".