1021323222 has 32 divisors (see below), whose sum is σ = 2281512960. Its totient is φ = 338655240.

The previous prime is 1021323209. The next prime is 1021323223. The reversal of 1021323222 is 2223231201.

It is a super-2 number, since 2×1021323222² = 2086202247592922568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1021323195 and 1021323204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021323223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39198 + ... + 59825.

It is an arithmetic number, because the mean of its divisors is an integer number (71297280).

Almost surely, 2^1021323222 is an apocalyptic number.

1021323222 is an abundant number, since it is smaller than the sum of its proper divisors (1260189738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021323222 is a wasteful number, since it uses less digits than its factorization.

1021323222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99225 (or 99219 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1021323222 is about 31958.1479751252. The cubic root of 1021323222 is about 1007.0578107841.

Adding to 1021323222 its reverse (2223231201), we get a palindrome (3244554423).

The spelling of 1021323222 in words is "one billion, twenty-one million, three hundred twenty-three thousand, two hundred twenty-two".