2001001011222 has 16 divisors (see below), whose sum is σ = 4011553344960. Its totient is φ = 665408449992.

The previous prime is 2001001011209. The next prime is 2001001011223. The reversal of 2001001011222 is 2221101001002.

It is a super-2 number, since 2×2001001011222² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001001011198 and 2001001011207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001001011223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397969048 + ... + 397974075.

It is an arithmetic number, because the mean of its divisors is an integer number (250722084060).

Almost surely, 2^{2001001011222} is an apocalyptic number.

2001001011222 is an abundant number, since it is smaller than the sum of its proper divisors (2010552333738).

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

2001001011222 is a wasteful number, since it uses less digits than its factorization.

2001001011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795943547.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2001001011222 its reverse (2221101001002), we get a palindrome (4222102012224).

The spelling of 2001001011222 in words is "two trillion, one billion, one million, eleven thousand, two hundred twenty-two".