21233311011222 has 16 divisors (see below), whose sum is σ = 43930988299440. Its totient is φ = 6833709290912.

The previous prime is 21233311011197. The next prime is 21233311011223. The reversal of 21233311011222 is 22211011333212.

It is a junction number, because it is equal to n+sod(n) for n = 21233311011192 and 21233311011201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233311011223) 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, 61015261353 + ... + 61015261700.

It is an arithmetic number, because the mean of its divisors is an integer number (2745686768715).

Almost surely, 2^{21233311011222} is an apocalyptic number.

21233311011222 is an abundant number, since it is smaller than the sum of its proper divisors (22697677288218).

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

21233311011222 is a wasteful number, since it uses less digits than its factorization.

21233311011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122030523087.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21233311011222 its reverse (22211011333212), we get a palindrome (43444322344434).

The spelling of 21233311011222 in words is "twenty-one trillion, two hundred thirty-three billion, three hundred eleven million, eleven thousand, two hundred twenty-two".