201211322220100 has 18 divisors (see below), whose sum is σ = 436628569217834. Its totient is φ = 80484528888000.

The previous prime is 201211322220079. The next prime is 201211322220163. The reversal of 201211322220100 is 1022223112102.

It can be written as a sum of positive squares in 3 ways, for example, as 31837964240196 + 169373357979904 = 5642514^2 + 13014352^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1006056611001 + ... + 1006056611200.

Almost surely, 2^{201211322220100} is an apocalyptic number.

201211322220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201211322220100 is an abundant number, since it is smaller than the sum of its proper divisors (235417246997734).

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

201211322220100 is a wasteful number, since it uses less digits than its factorization.

201211322220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012113222215 (or 2012113222208 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201211322220100 its reverse (1022223112102), we get a palindrome (202233545332202).

The spelling of 201211322220100 in words is "two hundred one trillion, two hundred eleven billion, three hundred twenty-two million, two hundred twenty thousand, one hundred".