8821212022531 has 4 divisors (see below), whose sum is σ = 8824153410000. Its totient is φ = 8818270635064.

The previous prime is 8821212022489. The next prime is 8821212022543. The reversal of 8821212022531 is 1352202121288.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8821212022531 - 2¹¹ = 8821212020483 is a prime.

It is a super-2 number, since 2×8821212022531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8821212022631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1470689236 + ... + 1470695233.

It is an arithmetic number, because the mean of its divisors is an integer number (2206038352500).

Almost surely, 2^{8821212022531} is an apocalyptic number.

8821212022531 is a deficient number, since it is larger than the sum of its proper divisors (2941387469).

8821212022531 is a wasteful number, since it uses less digits than its factorization.

8821212022531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2941387468.

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 8821212022531 in words is "eight trillion, eight hundred twenty-one billion, two hundred twelve million, twenty-two thousand, five hundred thirty-one".