2201211202021 has 16 divisors (see below), whose sum is σ = 2496218636800. Its totient is φ = 1924237280448.

The previous prime is 2201211201961. The next prime is 2201211202049. The reversal of 2201211202021 is 1202021121022.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2201211202021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201211201986 and 2201211202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201211202051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 967206 + ... + 2310391.

It is an arithmetic number, because the mean of its divisors is an integer number (156013664800).

Almost surely, 2^{2201211202021} is an apocalyptic number.

It is an amenable number.

2201211202021 is a deficient number, since it is larger than the sum of its proper divisors (295007434779).

2201211202021 is a wasteful number, since it uses less digits than its factorization.

2201211202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3280348.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2201211202021 its reverse (1202021121022), we get a palindrome (3403232323043).

The spelling of 2201211202021 in words is "two trillion, two hundred one billion, two hundred eleven million, two hundred two thousand, twenty-one".