1020222021 has 16 divisors (see below), whose sum is σ = 1674210944. Its totient is φ = 538138944.

The previous prime is 1020222019. The next prime is 1020222029. The reversal of 1020222021 is 1202220201.

It is not a de Polignac number, because 1020222021 - 2¹ = 1020222019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020221988 and 1020222006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020222029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1868266 + ... + 1868811.

It is an arithmetic number, because the mean of its divisors is an integer number (104638184).

Almost surely, 2^1020222021 is an apocalyptic number.

It is an amenable number.

1020222021 is a deficient number, since it is larger than the sum of its proper divisors (653988923).

1020222021 is a wasteful number, since it uses less digits than its factorization.

1020222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737100.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1020222021 is about 31940.9145298002. The cubic root of 1020222021 is about 1006.6957406604.

Adding to 1020222021 its reverse (1202220201), we get a palindrome (2222442222).

It can be divided in two parts, 10202 and 22021, that added together give a palindrome (32223).

The spelling of 1020222021 in words is "one billion, twenty million, two hundred twenty-two thousand, twenty-one".