210122110111020 has 192 divisors, whose sum is σ = 590616808104960. Its totient is φ = 55816440818688.

The previous prime is 210122110110977. The next prime is 210122110111061. The reversal of 210122110111020 is 20111011221012.

It is a happy number.

It is a super-2 number, since 2×210122110111020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59744698302 + ... + 59744701818.

It is an arithmetic number, because the mean of its divisors is an integer number (3076129208880).

Almost surely, 2^{210122110111020} is an apocalyptic number.

210122110111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210122110111020 is an abundant number, since it is smaller than the sum of its proper divisors (380494697993940).

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

210122110111020 is a wasteful number, since it uses less digits than its factorization.

210122110111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7272 (or 7270 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210122110111020 its reverse (20111011221012), we get a palindrome (230233121332032).

The spelling of 210122110111020 in words is "two hundred ten trillion, one hundred twenty-two billion, one hundred ten million, one hundred eleven thousand, twenty".