2210011101221 has 16 divisors (see below), whose sum is σ = 2917417253760. Its totient is φ = 1620787361280.

The previous prime is 2210011101203. The next prime is 2210011101247. The reversal of 2210011101221 is 1221011100122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2210011101221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2210011101196 and 2210011101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210011101251) 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, 844158776 + ... + 844161393.

It is an arithmetic number, because the mean of its divisors is an integer number (182338578360).

Almost surely, 2^{2210011101221} is an apocalyptic number.

It is an amenable number.

2210011101221 is a deficient number, since it is larger than the sum of its proper divisors (707406152539).

2210011101221 is a wasteful number, since it uses less digits than its factorization.

2210011101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688320204.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2210011101221 its reverse (1221011100122), we get a palindrome (3431022201343).

The spelling of 2210011101221 in words is "two trillion, two hundred ten billion, eleven million, one hundred one thousand, two hundred twenty-one".