100121211010 has 16 divisors (see below), whose sum is σ = 180283360896. Its totient is φ = 40033999728.

The previous prime is 100121211007. The next prime is 100121211083. The reversal of 100121211010 is 10112121001.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1781532 + ... + 1836871.

It is an arithmetic number, because the mean of its divisors is an integer number (11267710056).

Almost surely, 2^100121211010 is an apocalyptic number.

100121211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100121211010 is a deficient number, since it is larger than the sum of its proper divisors (80162149886).

100121211010 is a wasteful number, since it uses less digits than its factorization.

100121211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621177.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100121211010 its reverse (10112121001), we get a palindrome (110233332011).

Subtracting from 100121211010 its reverse (10112121001), we obtain a palindrome (90009090009).

The spelling of 100121211010 in words is "one hundred billion, one hundred twenty-one million, two hundred eleven thousand, ten".