21101323013122 has 12 divisors (see below), whose sum is σ = 34791024307158. Its totient is φ = 9591510460400.

The previous prime is 21101323013119. The next prime is 21101323013191. The reversal of 21101323013122 is 22131032310112.

It can be written as a sum of positive squares in only one way, i.e., 20956793023881 + 144529989241 = 4577859^2 + 380171^2 .

It is a super-2 number, since 2×21101323013122² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 21101323013093 and 21101323013102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43597774579 + ... + 43597775062.

Almost surely, 2^{21101323013122} is an apocalyptic number.

21101323013122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21101323013122 is a deficient number, since it is larger than the sum of its proper divisors (13689701294036).

21101323013122 is a wasteful number, since it uses less digits than its factorization.

21101323013122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87195549665 (or 87195549654 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21101323013122 its reverse (22131032310112), we get a palindrome (43232355323234).

The spelling of 21101323013122 in words is "twenty-one trillion, one hundred one billion, three hundred twenty-three million, thirteen thousand, one hundred twenty-two".