21012201201101 has 48 divisors (see below), whose sum is σ = 23916466022400. Its totient is φ = 18427416084000.

The previous prime is 21012201201073. The next prime is 21012201201107. The reversal of 21012201201101 is 10110210221012.

It is not a de Polignac number, because 21012201201101 - 2⁶ = 21012201201037 is a prime.

It is a super-2 number, since 2×21012201201101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012201201107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5076635090 + ... + 5076639228.

It is an arithmetic number, because the mean of its divisors is an integer number (498259708800).

Almost surely, 2^{21012201201101} is an apocalyptic number.

It is an amenable number.

21012201201101 is a deficient number, since it is larger than the sum of its proper divisors (2904264821299).

21012201201101 is a wasteful number, since it uses less digits than its factorization.

21012201201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8142 (or 8131 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21012201201101 its reverse (10110210221012), we get a palindrome (31122411422113).

The spelling of 21012201201101 in words is "twenty-one trillion, twelve billion, two hundred one million, two hundred one thousand, one hundred one".