211223311020100 has 72 divisors (see below), whose sum is σ = 458574601097088. Its totient is φ = 84448774396800.

The previous prime is 211223311020091. The next prime is 211223311020103. The reversal of 211223311020100 is 1020113322112.

It is not an unprimeable number, because it can be changed into a prime (211223311020103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3664688482 + ... + 3664746118.

It is an arithmetic number, because the mean of its divisors is an integer number (6369091681904).

Almost surely, 2^{211223311020100} is an apocalyptic number.

211223311020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211223311020100 is an abundant number, since it is smaller than the sum of its proper divisors (247351290076988).

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

211223311020100 is a wasteful number, since it uses less digits than its factorization.

211223311020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74605 (or 74598 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211223311020100 its reverse (1020113322112), we get a palindrome (212243424342212).

The spelling of 211223311020100 in words is "two hundred eleven trillion, two hundred twenty-three billion, three hundred eleven million, twenty thousand, one hundred".