122210021020 has 48 divisors (see below), whose sum is σ = 263654496000. Its totient is φ = 47554951680.

The previous prime is 122210020997. The next prime is 122210021027. The reversal of 122210021020 is 20120012221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122210021027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72661 + ... + 499699.

It is an arithmetic number, because the mean of its divisors is an integer number (5492802000).

Almost surely, 2^122210021020 is an apocalyptic number.

122210021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122210021020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131827248000).

122210021020 is an abundant number, since it is smaller than the sum of its proper divisors (141444474980).

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

122210021020 is a wasteful number, since it uses less digits than its factorization.

122210021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427438 (or 427436 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 122210021020 its reverse (20120012221), we get a palindrome (142330033241).

The spelling of 122210021020 in words is "one hundred twenty-two billion, two hundred ten million, twenty-one thousand, twenty".