1022222202021 has 24 divisors (see below), whose sum is σ = 1527511265280. Its totient is φ = 657959361696.

The previous prime is 1022222202019. The next prime is 1022222202031. The reversal of 1022222202021 is 1202022222201.

It is not a de Polignac number, because 1022222202021 - 2¹ = 1022222202019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022222201985 and 1022222202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022222202031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10885756 + ... + 10979258.

It is an arithmetic number, because the mean of its divisors is an integer number (63646302720).

Almost surely, 2^{1022222202021} is an apocalyptic number.

It is an amenable number.

1022222202021 is a deficient number, since it is larger than the sum of its proper divisors (505289063259).

1022222202021 is a wasteful number, since it uses less digits than its factorization.

1022222202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135425 (or 135422 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1022222202021 its reverse (1202022222201), we get a palindrome (2224244424222).

The spelling of 1022222202021 in words is "one trillion, twenty-two billion, two hundred twenty-two million, two hundred two thousand, twenty-one".