20021222220000 has 240 divisors, whose sum is σ = 65807464770432. Its totient is φ = 5328111040000.

The previous prime is 20021222219993. The next prime is 20021222220031. The reversal of 20021222220000 is 2222212002.

20021222220000 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29120197 + ... + 29799803.

Almost surely, 2^{20021222220000} is an apocalyptic number.

20021222220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20021222220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32903732385216).

20021222220000 is an abundant number, since it is smaller than the sum of its proper divisors (45786242550432).

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

20021222220000 is an equidigital number, since it uses as much as digits as its factorization.

20021222220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680131 (or 680108 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20021222220000 its reverse (2222212002), we get a palindrome (20023444432002).

The spelling of 20021222220000 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, two hundred twenty thousand".