221020012220000 has 120 divisors (see below), whose sum is σ = 621419866751376. Its totient is φ = 75778289856000.

The previous prime is 221020012219999. The next prime is 221020012220023. The reversal of 221020012220000 is 22210020122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 789217187 + ... + 789497186.

Almost surely, 2^{221020012220000} is an apocalyptic number.

221020012220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221020012220000 is an abundant number, since it is smaller than the sum of its proper divisors (400399854531376).

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

221020012220000 is an equidigital number, since it uses as much as digits as its factorization.

221020012220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578714410 (or 1578714387 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221020012220000 its reverse (22210020122), we get a palindrome (221042222240122).

It can be divided in two parts, 2210200122 and 20000, that added together give a palindrome (2210220122).

The spelling of 221020012220000 in words is "two hundred twenty-one trillion, twenty billion, twelve million, two hundred twenty thousand".