21120200101201 has 4 divisors (see below), whose sum is σ = 21128089607092. Its totient is φ = 21112310595312.

The previous prime is 21120200101177. The next prime is 21120200101303. The reversal of 21120200101201 is 10210100202112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6237386370576 + 14882813730625 = 2497476^2 + 3857825^2 .

It is a cyclic number.

It is not a de Polignac number, because 21120200101201 - 2¹³ = 21120200093009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21120200101801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3944748930 + ... + 3944754283.

It is an arithmetic number, because the mean of its divisors is an integer number (5282022401773).

Almost surely, 2^{21120200101201} is an apocalyptic number.

It is an amenable number.

21120200101201 is a deficient number, since it is larger than the sum of its proper divisors (7889505891).

21120200101201 is an equidigital number, since it uses as much as digits as its factorization.

21120200101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889505890.

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

Adding to 21120200101201 its reverse (10210100202112), we get a palindrome (31330300303313).

The spelling of 21120200101201 in words is "twenty-one trillion, one hundred twenty billion, two hundred million, one hundred one thousand, two hundred one".