2021221022222 has 8 divisors (see below), whose sum is σ = 3063087528816. Its totient is φ = 1000191845952.

The previous prime is 2021221022201. The next prime is 2021221022231. The reversal of 2021221022222 is 2222201221202.

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

It is a junction number, because it is equal to n+sod(n) for n = 2021221022194 and 2021221022203.

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, 5209332338 + ... + 5209332725.

It is an arithmetic number, because the mean of its divisors is an integer number (382885941102).

Almost surely, 2^{2021221022222} is an apocalyptic number.

2021221022222 is a deficient number, since it is larger than the sum of its proper divisors (1041866506594).

2021221022222 is a wasteful number, since it uses less digits than its factorization.

2021221022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10418665162.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 2021221022222 its reverse (2222201221202), we get a palindrome (4243422243424).

The spelling of 2021221022222 in words is "two trillion, twenty-one billion, two hundred twenty-one million, twenty-two thousand, two hundred twenty-two".