20010111220000 has 180 divisors, whose sum is σ = 54109984979358. Its totient is φ = 7276403200000.

The previous prime is 20010111219991. The next prime is 20010111220027. The reversal of 20010111220000 is 2211101002.

It can be written as a sum of positive squares in 5 ways, for example, as 105414504976 + 19904696715024 = 324676^2 + 4461468^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1714321 + ... + 6554320.

Almost surely, 2^{20010111220000} is an apocalyptic number.

20010111220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010111220000 is an abundant number, since it is smaller than the sum of its proper divisors (34099873759358).

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

20010111220000 is an equidigital number, since it uses as much as digits as its factorization.

20010111220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8268693 (or 8268659 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20010111220000 its reverse (2211101002), we get a palindrome (20012322321002).

The spelling of 20010111220000 in words is "twenty trillion, ten billion, one hundred eleven million, two hundred twenty thousand".