1001200020212 has 96 divisors (see below), whose sum is σ = 2230474579200. Its totient is φ = 383310563328.

The previous prime is 1001200020209. The next prime is 1001200020217. The reversal of 1001200020212 is 2120200021001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1001200020193 and 1001200020202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001200020217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199778 + ... + 1429094.

It is an arithmetic number, because the mean of its divisors is an integer number (23234110200).

Almost surely, 2^{1001200020212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001200020212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115237289600).

1001200020212 is an abundant number, since it is smaller than the sum of its proper divisors (1229274558988).

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

1001200020212 is a wasteful number, since it uses less digits than its factorization.

1001200020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229433 (or 1229431 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1001200020212 its reverse (2120200021001), we get a palindrome (3121400041213).

The spelling of 1001200020212 in words is "one trillion, one billion, two hundred million, twenty thousand, two hundred twelve".