2001022212 has 120 divisors (see below), whose sum is σ = 5489960000. Its totient is φ = 567217728.

The previous prime is 2001022211. The next prime is 2001022217. The reversal of 2001022212 is 2122201002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (2001022211) 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, 5733414 + ... + 5733762.

Almost surely, 2^2001022212 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 2001022212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2744980000).

2001022212 is an abundant number, since it is smaller than the sum of its proper divisors (3488937788).

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

2001022212 is a wasteful number, since it uses less digits than its factorization.

2001022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2001022212 is about 44732.7867676495. The cubic root of 2001022212 is about 1260.1356644048.

Adding to 2001022212 its reverse (2122201002), we get a palindrome (4123223214).

The spelling of 2001022212 in words is "two billion, one million, twenty-two thousand, two hundred twelve".