21220322204103 has 32 divisors (see below), whose sum is σ = 31867648653312. Its totient is φ = 12443573299200.

The previous prime is 21220322204099. The next prime is 21220322204111. The reversal of 21220322204103 is 30140222302212.

It is not a de Polignac number, because 21220322204103 - 2² = 21220322204099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220322204153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3427351 + ... + 7361207.

It is an arithmetic number, because the mean of its divisors is an integer number (995864020416).

Almost surely, 2^{21220322204103} is an apocalyptic number.

21220322204103 is a deficient number, since it is larger than the sum of its proper divisors (10647326449209).

21220322204103 is a wasteful number, since it uses less digits than its factorization.

21220322204103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939175.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21220322204103 its reverse (30140222302212), we get a palindrome (51360544506315).

The spelling of 21220322204103 in words is "twenty-one trillion, two hundred twenty billion, three hundred twenty-two million, two hundred four thousand, one hundred three".