2021100221222 has 8 divisors (see below), whose sum is σ = 3031787508672. Its totient is φ = 1010504385000.

The previous prime is 2021100221213. The next prime is 2021100221263. The reversal of 2021100221222 is 2221220011202.

It is a happy number.

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

It is a super-2 number, since 2×2021100221222² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2021100221222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22807529 + ... + 22895972.

It is an arithmetic number, because the mean of its divisors is an integer number (378973438584).

Almost surely, 2^{2021100221222} is an apocalyptic number.

2021100221222 is a deficient number, since it is larger than the sum of its proper divisors (1010687287450).

2021100221222 is a wasteful number, since it uses less digits than its factorization.

2021100221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45725614.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2021100221222 its reverse (2221220011202), we get a palindrome (4242320232424).

The spelling of 2021100221222 in words is "two trillion, twenty-one billion, one hundred million, two hundred twenty-one thousand, two hundred twenty-two".