201100221010 has 64 divisors (see below), whose sum is σ = 407269658880. Its totient is φ = 70937475840.

The previous prime is 201100220977. The next prime is 201100221017. The reversal of 201100221010 is 10122001102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (201100221017) 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, 2438145 + ... + 2519275.

It is an arithmetic number, because the mean of its divisors is an integer number (6363588420).

Almost surely, 2^201100221010 is an apocalyptic number.

201100221010 is an abundant number, since it is smaller than the sum of its proper divisors (206169437870).

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

201100221010 is a wasteful number, since it uses less digits than its factorization.

201100221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82003.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201100221010 its reverse (10122001102), we get a palindrome (211222222112).

The spelling of 201100221010 in words is "two hundred one billion, one hundred million, two hundred twenty-one thousand, ten".