21122100210203 has 8 divisors (see below), whose sum is σ = 21165434615616. Its totient is φ = 21078767089800.

The previous prime is 21122100210179. The next prime is 21122100210247. The reversal of 21122100210203 is 30201200122112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21122100210203 - 2²² = 21122096015899 is a prime.

It is a super-2 number, since 2×21122100210203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122100219203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37034468 + ... + 37600478.

It is an arithmetic number, because the mean of its divisors is an integer number (2645679326952).

Almost surely, 2^{21122100210203} is an apocalyptic number.

21122100210203 is a deficient number, since it is larger than the sum of its proper divisors (43334405413).

21122100210203 is an equidigital number, since it uses as much as digits as its factorization.

21122100210203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642505.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21122100210203 its reverse (30201200122112), we get a palindrome (51323300332315).

The spelling of 21122100210203 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred million, two hundred ten thousand, two hundred three".