2001010100122 has 16 divisors (see below), whose sum is σ = 3274553102400. Its totient is φ = 909502007040.

The previous prime is 2001010100069. The next prime is 2001010100129. The reversal of 2001010100122 is 2210010101002.

It is a junction number, because it is equal to n+sod(n) for n = 2001010100099 and 2001010100108.

It is not an unprimeable number, because it can be changed into a prime (2001010100129) 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, 1974222 + ... + 2810617.

It is an arithmetic number, because the mean of its divisors is an integer number (204659568900).

Almost surely, 2^{2001010100122} is an apocalyptic number.

2001010100122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2001010100122 is a deficient number, since it is larger than the sum of its proper divisors (1273543002278).

2001010100122 is a wasteful number, since it uses less digits than its factorization.

2001010100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803861.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2001010100122 its reverse (2210010101002), we get a palindrome (4211020201124).

The spelling of 2001010100122 in words is "two trillion, one billion, ten million, one hundred thousand, one hundred twenty-two".