21220101031233 has 16 divisors (see below), whose sum is σ = 30689096500160. Its totient is φ = 12964577494464.

The previous prime is 21220101031169. The next prime is 21220101031277. The reversal of 21220101031233 is 33213010102212.

It is not a de Polignac number, because 21220101031233 - 2⁶ = 21220101031169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21220101031933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1957207366 + ... + 1957218207.

It is an arithmetic number, because the mean of its divisors is an integer number (1918068531260).

Almost surely, 2^{21220101031233} is an apocalyptic number.

It is an amenable number.

21220101031233 is a deficient number, since it is larger than the sum of its proper divisors (9468995468927).

21220101031233 is a wasteful number, since it uses less digits than its factorization.

21220101031233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3914425728.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21220101031233 its reverse (33213010102212), we get a palindrome (54433111133445).

The spelling of 21220101031233 in words is "twenty-one trillion, two hundred twenty billion, one hundred one million, thirty-one thousand, two hundred thirty-three".