2201112101221 has 24 divisors (see below), whose sum is σ = 2452183268472. Its totient is φ = 1974043632000.

The previous prime is 2201112101203. The next prime is 2201112101267. The reversal of 2201112101221 is 1221012111022.

It can be written as a sum of positive squares in 4 ways, for example, as 377966744100 + 1823145357121 = 614790^2 + 1350239^2 .

It is not a de Polignac number, because 2201112101221 - 2⁷ = 2201112101093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201112101195 and 2201112101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201112101291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3060111 + ... + 3710323.

It is an arithmetic number, because the mean of its divisors is an integer number (102174302853).

Almost surely, 2^{2201112101221} is an apocalyptic number.

It is an amenable number.

2201112101221 is a deficient number, since it is larger than the sum of its proper divisors (251071167251).

2201112101221 is a wasteful number, since it uses less digits than its factorization.

2201112101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650613 (or 650602 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2201112101221 its reverse (1221012111022), we get a palindrome (3422124212243).

The spelling of 2201112101221 in words is "two trillion, two hundred one billion, one hundred twelve million, one hundred one thousand, two hundred twenty-one".