2212202121020 has 96 divisors (see below), whose sum is σ = 4906195660800. Its totient is φ = 835558377984.

The previous prime is 2212202120987. The next prime is 2212202121029. The reversal of 2212202121020 is 201212022122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2212202121020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212202121029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170701301 + ... + 170714259.

It is an arithmetic number, because the mean of its divisors is an integer number (51106204800).

Almost surely, 2^{2212202121020} is an apocalyptic number.

2212202121020 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 2212202121020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2453097830400).

2212202121020 is an abundant number, since it is smaller than the sum of its proper divisors (2693993539780).

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

2212202121020 is a wasteful number, since it uses less digits than its factorization.

2212202121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14427 (or 14425 counting only the distinct ones).

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

Adding to 2212202121020 its reverse (201212022122), we get a palindrome (2413414143142).

The spelling of 2212202121020 in words is "two trillion, two hundred twelve billion, two hundred two million, one hundred twenty-one thousand, twenty".