21122100122 has 8 divisors (see below), whose sum is σ = 32064875136. Its totient is φ = 10433808412.

The previous prime is 21122100067. The next prime is 21122100137. The reversal of 21122100122 is 22100122112.

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

It is a super-2 number, since 2×21122100122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122100097 and 21122100106.

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, 63620618 + ... + 63620949.

It is an arithmetic number, because the mean of its divisors is an integer number (4008109392).

Almost surely, 2^21122100122 is an apocalyptic number.

21122100122 is a deficient number, since it is larger than the sum of its proper divisors (10942775014).

21122100122 is a wasteful number, since it uses less digits than its factorization.

21122100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127241652.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21122100122 its reverse (22100122112), we get a palindrome (43222222234).

The spelling of 21122100122 in words is "twenty-one billion, one hundred twenty-two million, one hundred thousand, one hundred twenty-two".