21000201030122 has 64 divisors (see below), whose sum is σ = 32297427043200. Its totient is φ = 10238388765696.

The previous prime is 21000201030047. The next prime is 21000201030181. The reversal of 21000201030122 is 22103010200012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21000201030097 and 21000201030106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8238602504 + ... + 8238605052.

It is an arithmetic number, because the mean of its divisors is an integer number (504647297550).

Almost surely, 2^{21000201030122} is an apocalyptic number.

21000201030122 is a deficient number, since it is larger than the sum of its proper divisors (11297226013078).

21000201030122 is a wasteful number, since it uses less digits than its factorization.

21000201030122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295.

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

Adding to 21000201030122 its reverse (22103010200012), we get a palindrome (43103211230134).

The spelling of 21000201030122 in words is "twenty-one trillion, two hundred one million, thirty thousand, one hundred twenty-two".