2001111222212 has 24 divisors (see below), whose sum is σ = 3794172582816. Its totient is φ = 919799411328.

The previous prime is 2001111222193. The next prime is 2001111222233. The reversal of 2001111222212 is 2122221111002.

It is a super-2 number, since 2×2001111222212² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342184358 + ... + 342190205.

It is an arithmetic number, because the mean of its divisors is an integer number (158090524284).

Almost surely, 2^{2001111222212} is an apocalyptic number.

It is an amenable number.

2001111222212 is a deficient number, since it is larger than the sum of its proper divisors (1793061360604).

2001111222212 is a wasteful number, since it uses less digits than its factorization.

2001111222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684374627 (or 684374625 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2001111222212 its reverse (2122221111002), we get a palindrome (4123332333214).

The spelling of 2001111222212 in words is "two trillion, one billion, one hundred eleven million, two hundred twenty-two thousand, two hundred twelve".