210001220011100 has 108 divisors (see below), whose sum is σ = 531238209812856. Its totient is φ = 71846241022080.

The previous prime is 210001220011021. The next prime is 210001220011109. The reversal of 210001220011100 is 1110022100012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210001220011109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43597559 + ... + 48174158.

It is an arithmetic number, because the mean of its divisors is an integer number (4918872313082).

Almost surely, 2^{210001220011100} is an apocalyptic number.

210001220011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210001220011100 is an abundant number, since it is smaller than the sum of its proper divisors (321236989801756).

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

210001220011100 is a wasteful number, since it uses less digits than its factorization.

210001220011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91772212 (or 91772198 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 210001220011100 its reverse (1110022100012), we get a palindrome (211111242111112).

The spelling of 210001220011100 in words is "two hundred ten trillion, one billion, two hundred twenty million, eleven thousand, one hundred".