1021213422 has 24 divisors (see below), whose sum is σ = 2218217976. Its totient is φ = 339544656.

The previous prime is 1021213411. The next prime is 1021213429. The reversal of 1021213422 is 2243121201.

It is a happy number.

1021213422 is a `hidden beast` number, since 10 + 21 + 213 + 422 = 666.

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 = 1021213395 and 1021213404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021213429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64308 + ... + 78599.

It is an arithmetic number, because the mean of its divisors is an integer number (92425749).

Almost surely, 2^1021213422 is an apocalyptic number.

1021213422 is an abundant number, since it is smaller than the sum of its proper divisors (1197004554).

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

1021213422 is a wasteful number, since it uses less digits than its factorization.

1021213422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143312 (or 143309 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1021213422 is about 31956.4300571888. The cubic root of 1021213422 is about 1007.0217207041.

Adding to 1021213422 its reverse (2243121201), we get a palindrome (3264334623).

The spelling of 1021213422 in words is "one billion, twenty-one million, two hundred thirteen thousand, four hundred twenty-two".