2001101222122 has 32 divisors (see below), whose sum is σ = 3130700284800. Its totient is φ = 958134477888.

The previous prime is 2001101222119. The next prime is 2001101222123. The reversal of 2001101222122 is 2212221011002.

It is a happy number.

It is a super-2 number, since 2×2001101222122² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001101222096 and 2001101222105.

It is not an unprimeable number, because it can be changed into a prime (2001101222123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3173704 + ... + 3751612.

It is an arithmetic number, because the mean of its divisors is an integer number (97834383900).

Almost surely, 2^{2001101222122} is an apocalyptic number.

2001101222122 is a deficient number, since it is larger than the sum of its proper divisors (1129599062678).

2001101222122 is a wasteful number, since it uses less digits than its factorization.

2001101222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578430.

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

Adding to 2001101222122 its reverse (2212221011002), we get a palindrome (4213322233124).

The spelling of 2001101222122 in words is "two trillion, one billion, one hundred one million, two hundred twenty-two thousand, one hundred twenty-two".