10211220100 has 36 divisors (see below), whose sum is σ = 22175636224. Its totient is φ = 4081301280.

The previous prime is 10211220043. The next prime is 10211220101. The reversal of 10211220100 is 102211201.

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 (10211220101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91117 + ... + 169483.

Almost surely, 2^10211220100 is an apocalyptic number.

10211220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10211220100 is an abundant number, since it is smaller than the sum of its proper divisors (11964416124).

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

10211220100 is a wasteful number, since it uses less digits than its factorization.

10211220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79684 (or 79677 counting only the distinct ones).

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

Adding to 10211220100 its reverse (102211201), we get a palindrome (10313431301).

The spelling of 10211220100 in words is "ten billion, two hundred eleven million, two hundred twenty thousand, one hundred".