2212020121220 has 288 divisors, whose sum is σ = 6218222139360. Its totient is φ = 652835635200.

The previous prime is 2212020121183. The next prime is 2212020121231. The reversal of 2212020121220 is 221210202122.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 23082117184 + 2188938004036 = 151928^2 + 1479506^2 .

It is a super-3 number, since 3×2212020121220³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23560370 + ... + 23654070.

It is an arithmetic number, because the mean of its divisors is an integer number (21591049095).

Almost surely, 2^{2212020121220} is an apocalyptic number.

2212020121220 is a gapful number since it is divisible by the number (20) 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 2212020121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3109111069680).

2212020121220 is an abundant number, since it is smaller than the sum of its proper divisors (4006202018140).

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

2212020121220 is a wasteful number, since it uses less digits than its factorization.

2212020121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93863 (or 93854 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2212020121220 its reverse (221210202122), we get a palindrome (2433230323342).

The spelling of 2212020121220 in words is "two trillion, two hundred twelve billion, twenty million, one hundred twenty-one thousand, two hundred twenty".