2001013200122 has 16 divisors (see below), whose sum is σ = 3011850933000. Its totient is φ = 997066186560.

The previous prime is 2001013200119. The next prime is 2001013200167. The reversal of 2001013200122 is 2210023101002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1215310012921 + 785703187201 = 1102411^2 + 886399^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2001013200097 and 2001013200106.

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, 391904 + ... + 2038532.

Almost surely, 2^{2001013200122} is an apocalyptic number.

2001013200122 is a deficient number, since it is larger than the sum of its proper divisors (1010837732878).

2001013200122 is a wasteful number, since it uses less digits than its factorization.

2001013200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648721.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2001013200122 its reverse (2210023101002), we get a palindrome (4211036301124).

The spelling of 2001013200122 in words is "two trillion, one billion, thirteen million, two hundred thousand, one hundred twenty-two".