210122121222220 has 96 divisors (see below), whose sum is σ = 451322971545600. Its totient is φ = 82136824833024.

The previous prime is 210122121222199. The next prime is 210122121222239. The reversal of 210122121222220 is 22222121221012.

It is a junction number, because it is equal to n+sod(n) for n = 210122121222191 and 210122121222200.

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, 11106397921 + ... + 11106416839.

It is an arithmetic number, because the mean of its divisors is an integer number (4701280953600).

Almost surely, 2^{210122121222220} is an apocalyptic number.

210122121222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210122121222220 is an abundant number, since it is smaller than the sum of its proper divisors (241200850323380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210122121222220 is a wasteful number, since it uses less digits than its factorization.

210122121222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36127 (or 36125 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 210122121222220 its reverse (22222121221012), we get a palindrome (232344242443232).

The spelling of 210122121222220 in words is "two hundred ten trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty".