201102100202021 has 4 divisors (see below), whose sum is σ = 201109141867200. Its totient is φ = 201095058536844.

The previous prime is 201102100202009. The next prime is 201102100202089. The reversal of 201102100202021 is 120202001201102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201102100202021 - 2⁶ = 201102100201957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201102100201987 and 201102100202005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102120202021) 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, 3520789751 + ... + 3520846868.

It is an arithmetic number, because the mean of its divisors is an integer number (50277285466800).

Almost surely, 2^{201102100202021} is an apocalyptic number.

It is an amenable number.

201102100202021 is a deficient number, since it is larger than the sum of its proper divisors (7041665179).

201102100202021 is an equidigital number, since it uses as much as digits as its factorization.

201102100202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7041665178.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201102100202021 its reverse (120202001201102), we get a palindrome (321304101403123).

The spelling of 201102100202021 in words is "two hundred one trillion, one hundred two billion, one hundred million, two hundred two thousand, twenty-one".