21012200101201 has 32 divisors (see below), whose sum is σ = 21893843347200. Its totient is φ = 20149706707200.

The previous prime is 21012200101183. The next prime is 21012200101313. The reversal of 21012200101201 is 10210100221012.

It is not a de Polignac number, because 21012200101201 - 2²⁵ = 21012166546769 is a prime.

It is a super-2 number, since 2×21012200101201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21012200101001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3993952911 + ... + 3993958171.

It is an arithmetic number, because the mean of its divisors is an integer number (684182604600).

Almost surely, 2^{21012200101201} is an apocalyptic number.

It is an amenable number.

21012200101201 is a deficient number, since it is larger than the sum of its proper divisors (881643245999).

21012200101201 is a wasteful number, since it uses less digits than its factorization.

21012200101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7897.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21012200101201 its reverse (10210100221012), we get a palindrome (31222300322213).

The spelling of 21012200101201 in words is "twenty-one trillion, twelve billion, two hundred million, one hundred one thousand, two hundred one".