218203822020 has 24 divisors (see below), whose sum is σ = 610970701824. Its totient is φ = 58187685856.

The previous prime is 218203822019. The next prime is 218203822049. The reversal of 218203822020 is 20228302812.

It is a super-2 number, since 2×218203822020² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1818365124 + ... + 1818365243.

It is an arithmetic number, because the mean of its divisors is an integer number (25457112576).

Almost surely, 2^218203822020 is an apocalyptic number.

218203822020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218203822020 is an abundant number, since it is smaller than the sum of its proper divisors (392766879804).

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

218203822020 is a wasteful number, since it uses less digits than its factorization.

218203822020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3636730379 (or 3636730377 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 218203822020 in words is "two hundred eighteen billion, two hundred three million, eight hundred twenty-two thousand, twenty".