20010211122210 has 64 divisors (see below), whose sum is σ = 49283219422080. Its totient is φ = 5196661675520.

The previous prime is 20010211122199. The next prime is 20010211122217. The reversal of 20010211122210 is 1222111201002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20010211122210.

It is not an unprimeable number, because it can be changed into a prime (20010211122217) 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, 13755525 + ... + 15140504.

It is an arithmetic number, because the mean of its divisors is an integer number (770050303470).

Almost surely, 2^{20010211122210} is an apocalyptic number.

20010211122210 is an abundant number, since it is smaller than the sum of its proper divisors (29273008299870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20010211122210 is a wasteful number, since it uses less digits than its factorization.

20010211122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28896643.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20010211122210 its reverse (1222111201002), we get a palindrome (21232322323212).

The spelling of 20010211122210 in words is "twenty trillion, ten billion, two hundred eleven million, one hundred twenty-two thousand, two hundred ten".