21211220300222 has 8 divisors (see below), whose sum is σ = 31845993451272. Its totient is φ = 10595889149800.

The previous prime is 21211220300209. The next prime is 21211220300267. The reversal of 21211220300222 is 22200302211212.

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

It is a junction number, because it is equal to n+sod(n) for n = 21211220300194 and 21211220300203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4860497429 + ... + 4860501792.

It is an arithmetic number, because the mean of its divisors is an integer number (3980749181409).

Almost surely, 2^{21211220300222} is an apocalyptic number.

21211220300222 is a deficient number, since it is larger than the sum of its proper divisors (10634773151050).

21211220300222 is a wasteful number, since it uses less digits than its factorization.

21211220300222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9721000314.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21211220300222 its reverse (22200302211212), we get a palindrome (43411522511434).

The spelling of 21211220300222 in words is "twenty-one trillion, two hundred eleven billion, two hundred twenty million, three hundred thousand, two hundred twenty-two".