122100202020210 has 128 divisors (see below), whose sum is σ = 301796912841984. Its totient is φ = 31596085002240.

The previous prime is 122100202020163. The next prime is 122100202020217. The reversal of 122100202020210 is 12020202001221.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122100202020210.

It is not an unprimeable number, because it can be changed into a prime (122100202020217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 172019257 + ... + 172727603.

It is an arithmetic number, because the mean of its divisors is an integer number (2357788381578).

Almost surely, 2^{122100202020210} is an apocalyptic number.

122100202020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122100202020210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150898456420992).

122100202020210 is an abundant number, since it is smaller than the sum of its proper divisors (179696710821774).

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

122100202020210 is a wasteful number, since it uses less digits than its factorization.

122100202020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709148.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 122100202020210 its reverse (12020202001221), we get a palindrome (134120404021431).

The spelling of 122100202020210 in words is "one hundred twenty-two trillion, one hundred billion, two hundred two million, twenty thousand, two hundred ten".