2122110101221 has 16 divisors (see below), whose sum is σ = 2328591720960. Its totient is φ = 1917890637120.

The previous prime is 2122110101197. The next prime is 2122110101249. The reversal of 2122110101221 is 1221010112212.

It is a cyclic number.

It is not a de Polignac number, because 2122110101221 - 2⁷ = 2122110101093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122110101195 and 2122110101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122110101261) 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, 29904460 + ... + 29975338.

It is an arithmetic number, because the mean of its divisors is an integer number (145536982560).

Almost surely, 2^{2122110101221} is an apocalyptic number.

It is an amenable number.

2122110101221 is a deficient number, since it is larger than the sum of its proper divisors (206481619739).

2122110101221 is a wasteful number, since it uses less digits than its factorization.

2122110101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86796.

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

Adding to 2122110101221 its reverse (1221010112212), we get a palindrome (3343120213433).

The spelling of 2122110101221 in words is "two trillion, one hundred twenty-two billion, one hundred ten million, one hundred one thousand, two hundred twenty-one".