1021822213 has 24 divisors (see below), whose sum is σ = 1126419840. Its totient is φ = 926062080.

The previous prime is 1021822211. The next prime is 1021822231. The reversal of 1021822213 is 3122281201.

It is not a de Polignac number, because 1021822213 - 2¹ = 1021822211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021822211) 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, 982948 + ... + 983986.

It is an arithmetic number, because the mean of its divisors is an integer number (46934160).

Almost surely, 2^1021822213 is an apocalyptic number.

It is an amenable number.

1021822213 is a deficient number, since it is larger than the sum of its proper divisors (104597627).

1021822213 is a wasteful number, since it uses less digits than its factorization.

1021822213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1021822213 is about 31965.9539666815. The cubic root of 1021822213 is about 1007.2217911830.

The spelling of 1021822213 in words is "one billion, twenty-one million, eight hundred twenty-two thousand, two hundred thirteen".