21101200101006 has 32 divisors (see below), whose sum is σ = 43575005902848. Its totient is φ = 6805082812320.

The previous prime is 21101200100999. The next prime is 21101200101011. The reversal of 21101200101006 is 60010100210112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13909690 + ... + 15351933.

It is an arithmetic number, because the mean of its divisors is an integer number (1361718934464).

Almost surely, 2^{21101200101006} is an apocalyptic number.

21101200101006 is an abundant number, since it is smaller than the sum of its proper divisors (22473805801842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21101200101006 is a wasteful number, since it uses less digits than its factorization.

21101200101006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29265536.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21101200101006 its reverse (60010100210112), we get a palindrome (81111300311118).

The spelling of 21101200101006 in words is "twenty-one trillion, one hundred one billion, two hundred million, one hundred one thousand, six".