2201101220021 has 4 divisors (see below), whose sum is σ = 2401201330944. Its totient is φ = 2001001109100.

The previous prime is 2201101220009. The next prime is 2201101220113. The reversal of 2201101220021 is 1200221011022.

2201101220021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-2201101220021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2201101219978 and 2201101220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201101226021) 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, 100050055445 + ... + 100050055466.

It is an arithmetic number, because the mean of its divisors is an integer number (600300332736).

Almost surely, 2^{2201101220021} is an apocalyptic number.

It is an amenable number.

2201101220021 is a deficient number, since it is larger than the sum of its proper divisors (200100110923).

2201101220021 is a wasteful number, since it uses less digits than its factorization.

2201101220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200100110922.

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

Adding to 2201101220021 its reverse (1200221011022), we get a palindrome (3401322231043).

The spelling of 2201101220021 in words is "two trillion, two hundred one billion, one hundred one million, two hundred twenty thousand, twenty-one".