20001102122210 has 64 divisors (see below), whose sum is σ = 39374603988480. Its totient is φ = 7254674676480.

The previous prime is 20001102122189. The next prime is 20001102122213. The reversal of 20001102122210 is 1222120110002.

It is a super-2 number, since 2×20001102122210² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20001102122213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137081576 + ... + 137227404.

It is an arithmetic number, because the mean of its divisors is an integer number (615228187320).

Almost surely, 2^{20001102122210} is an apocalyptic number.

20001102122210 is a deficient number, since it is larger than the sum of its proper divisors (19373501866270).

20001102122210 is a wasteful number, since it uses less digits than its factorization.

20001102122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149003.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20001102122210 its reverse (1222120110002), we get a palindrome (21223222232212).

The spelling of 20001102122210 in words is "twenty trillion, one billion, one hundred two million, one hundred twenty-two thousand, two hundred ten".