21101022010011 has 8 divisors (see below), whose sum is σ = 28134765048400. Its totient is φ = 14067313489152.

The previous prime is 21101022010007. The next prime is 21101022010021. The reversal of 21101022010011 is 11001022010112.

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

It is not a de Polignac number, because 21101022010011 - 2² = 21101022010007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101022010021) 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, 7167610 + ... + 9673503.

It is an arithmetic number, because the mean of its divisors is an integer number (3516845631050).

Almost surely, 2^{21101022010011} is an apocalyptic number.

21101022010011 is a deficient number, since it is larger than the sum of its proper divisors (7033743038389).

21101022010011 is a wasteful number, since it uses less digits than its factorization.

21101022010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17258765.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21101022010011 its reverse (11001022010112), we get a palindrome (32102044020123).

The spelling of 21101022010011 in words is "twenty-one trillion, one hundred one billion, twenty-two million, ten thousand, eleven".