10001222020000 has 240 divisors, whose sum is σ = 25685638114752. Its totient is φ = 3824860160000.

The previous prime is 10001222019979. The next prime is 10001222020001. The reversal of 10001222020000 is 2022210001.

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

It is not an unprimeable number, because it can be changed into a prime (10001222020001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1663816995 + ... + 1663823005.

Almost surely, 2^{10001222020000} is an apocalyptic number.

10001222020000 is a gapful number since it is divisible by the number (10) 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 10001222020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12842819057376).

10001222020000 is an abundant number, since it is smaller than the sum of its proper divisors (15684416094752).

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

10001222020000 is an equidigital number, since it uses as much as digits as its factorization.

10001222020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9681 (or 9658 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 10001222020000 its reverse (2022210001), we get a palindrome (10003244230001).

The spelling of 10001222020000 in words is "ten trillion, one billion, two hundred twenty-two million, twenty thousand".