100221211111010 has 48 divisors (see below), whose sum is σ = 207700951721472. Its totient is φ = 34525967450400.

The previous prime is 100221211111001. The next prime is 100221211111019. The reversal of 100221211111010 is 10111112122001.

It is an interprime number because it is at equal distance from previous prime (100221211111001) and next prime (100221211111019).

It is not an unprimeable number, because it can be changed into a prime (100221211111019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1261874306 + ... + 1261953725.

It is an arithmetic number, because the mean of its divisors is an integer number (4327103160864).

Almost surely, 2^{100221211111010} is an apocalyptic number.

100221211111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100221211111010 is an abundant number, since it is smaller than the sum of its proper divisors (107479740610462).

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

100221211111010 is a wasteful number, since it uses less digits than its factorization.

100221211111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523828087 (or 2523828068 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 100221211111010 its reverse (10111112122001), we get a palindrome (110332323233011).

The spelling of 100221211111010 in words is "one hundred trillion, two hundred twenty-one billion, two hundred eleven million, one hundred eleven thousand, ten".