21301212303222 has 16 divisors (see below), whose sum is σ = 42617069682480. Its totient is φ = 7097963255072.

The previous prime is 21301212303167. The next prime is 21301212303229. The reversal of 21301212303222 is 22230321210312.

It is a junction number, because it is equal to n+sod(n) for n = 21301212303192 and 21301212303201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301212303229) 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, 610192593 + ... + 610227500.

It is an arithmetic number, because the mean of its divisors is an integer number (2663566855155).

Almost surely, 2^{21301212303222} is an apocalyptic number.

21301212303222 is an abundant number, since it is smaller than the sum of its proper divisors (21315857379258).

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

21301212303222 is a wasteful number, since it uses less digits than its factorization.

21301212303222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220423007.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21301212303222 its reverse (22230321210312), we get a palindrome (43531533513534).

The spelling of 21301212303222 in words is "twenty-one trillion, three hundred one billion, two hundred twelve million, three hundred three thousand, two hundred twenty-two".