10001211100220 has 24 divisors (see below), whose sum is σ = 21019358850000. Its totient is φ = 3997281480192.

The previous prime is 10001211100217. The next prime is 10001211100259. The reversal of 10001211100220 is 2200111210001.

It is a congruent number.

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, 200159390 + ... + 200209349.

It is an arithmetic number, because the mean of its divisors is an integer number (875806618750).

Almost surely, 2^{10001211100220} is an apocalyptic number.

10001211100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001211100220 is an abundant number, since it is smaller than the sum of its proper divisors (11018147749780).

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

10001211100220 is a wasteful number, since it uses less digits than its factorization.

10001211100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400369997 (or 400369995 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10001211100220 its reverse (2200111210001), we get a palindrome (12201322310221).

The spelling of 10001211100220 in words is "ten trillion, one billion, two hundred eleven million, one hundred thousand, two hundred twenty".