20211100210 has 32 divisors (see below), whose sum is σ = 43010818560. Its totient is φ = 6690570432.

The previous prime is 20211100207. The next prime is 20211100243. The reversal of 20211100210 is 1200111202.

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 15 ways as a sum of consecutive naturals, for example, 4976074 + ... + 4980133.

It is an arithmetic number, because the mean of its divisors is an integer number (1344088080).

Almost surely, 2^20211100210 is an apocalyptic number.

20211100210 is an abundant number, since it is smaller than the sum of its proper divisors (22799718350).

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

20211100210 is a wasteful number, since it uses less digits than its factorization.

20211100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9956250.

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

Adding to 20211100210 its reverse (1200111202), we get a palindrome (21411211412).

The spelling of 20211100210 in words is "twenty billion, two hundred eleven million, one hundred thousand, two hundred ten".