122020210000 has 100 divisors (see below), whose sum is σ = 318148325572. Its totient is φ = 45053568000.

The previous prime is 122020209977. The next prime is 122020210033. The reversal of 122020210000 is 12020221.

It can be written as a sum of positive squares in 10 ways, for example, as 121547060496 + 473149504 = 348636^2 + 21752^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 339309 + ... + 599308.

Almost surely, 2^122020210000 is an apocalyptic number.

122020210000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122020210000 is an abundant number, since it is smaller than the sum of its proper divisors (196128115572).

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

122020210000 is an equidigital number, since it uses as much as digits as its factorization.

122020210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938658 (or 938637 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 122020210000 its reverse (12020221), we get a palindrome (122032230221).

The spelling of 122020210000 in words is "one hundred twenty-two billion, twenty million, two hundred ten thousand".