221011122222020 has 48 divisors (see below), whose sum is σ = 515948545394688. Its totient is φ = 78971716126080.

The previous prime is 221011122221983. The next prime is 221011122222031. The reversal of 221011122222020 is 20222221110122.

It is a super-2 number, since 2×221011122222020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 221011122221983 and 221011122222001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13710359324 + ... + 13710375443.

It is an arithmetic number, because the mean of its divisors is an integer number (10748928029056).

Almost surely, 2^{221011122222020} is an apocalyptic number.

221011122222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221011122222020 is an abundant number, since it is smaller than the sum of its proper divisors (294937423172668).

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

221011122222020 is a wasteful number, since it uses less digits than its factorization.

221011122222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27420734820 (or 27420734818 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221011122222020 its reverse (20222221110122), we get a palindrome (241233343332142).

The spelling of 221011122222020 in words is "two hundred twenty-one trillion, eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, twenty".