21022210100122 has 64 divisors (see below), whose sum is σ = 39815804067840. Its totient is φ = 8086004035200.

The previous prime is 21022210100053. The next prime is 21022210100189. The reversal of 21022210100122 is 22100101222012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21022210100096 and 21022210100105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132980547 + ... + 133138537.

It is an arithmetic number, because the mean of its divisors is an integer number (622121938560).

Almost surely, 2^{21022210100122} is an apocalyptic number.

21022210100122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21022210100122 is a deficient number, since it is larger than the sum of its proper divisors (18793593967718).

21022210100122 is a wasteful number, since it uses less digits than its factorization.

21022210100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169027.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21022210100122 its reverse (22100101222012), we get a palindrome (43122311322134).

The spelling of 21022210100122 in words is "twenty-one trillion, twenty-two billion, two hundred ten million, one hundred thousand, one hundred twenty-two".