2001022111222 has 16 divisors (see below), whose sum is σ = 3156816385152. Its totient is φ = 949967890560.

The previous prime is 2001022111217. The next prime is 2001022111261. The reversal of 2001022111222 is 2221112201002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2001022111196 and 2001022111205.

It is a congruent number.

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, 304473603 + ... + 304480174.

It is an arithmetic number, because the mean of its divisors is an integer number (197301024072).

Almost surely, 2^{2001022111222} is an apocalyptic number.

2001022111222 is a deficient number, since it is larger than the sum of its proper divisors (1155794273930).

2001022111222 is a wasteful number, since it uses less digits than its factorization.

2001022111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608953863.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2001022111222 its reverse (2221112201002), we get a palindrome (4222134312224).

The spelling of 2001022111222 in words is "two trillion, one billion, twenty-two million, one hundred eleven thousand, two hundred twenty-two".