2220101121221 has 8 divisors (see below), whose sum is σ = 2228036300160. Its totient is φ = 2212166578752.

The previous prime is 2220101121211. The next prime is 2220101121241. The reversal of 2220101121221 is 1221211010222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2220101121221 - 2³⁰ = 2219027379397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2220101121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220101121211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7483901 + ... + 7774893.

It is an arithmetic number, because the mean of its divisors is an integer number (278504537520).

Almost surely, 2^{2220101121221} is an apocalyptic number.

It is an amenable number.

2220101121221 is a deficient number, since it is larger than the sum of its proper divisors (7935178939).

2220101121221 is a wasteful number, since it uses less digits than its factorization.

2220101121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318235.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2220101121221 its reverse (1221211010222), we get a palindrome (3441312131443).

The spelling of 2220101121221 in words is "two trillion, two hundred twenty billion, one hundred one million, one hundred twenty-one thousand, two hundred twenty-one".