20122011012220 has 48 divisors (see below), whose sum is σ = 45512191424448. Its totient is φ = 7428769344000.

The previous prime is 20122011012199. The next prime is 20122011012269. The reversal of 20122011012220 is 2221011022102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20122011012194 and 20122011012203.

It is a congruent number.

It is an unprimeable number.

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, 2506656 + ... + 6821095.

It is an arithmetic number, because the mean of its divisors is an integer number (948170654676).

Almost surely, 2^{20122011012220} is an apocalyptic number.

20122011012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122011012220 is an abundant number, since it is smaller than the sum of its proper divisors (25390180412228).

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

20122011012220 is a wasteful number, since it uses less digits than its factorization.

20122011012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9336070 (or 9336068 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20122011012220 its reverse (2221011022102), we get a palindrome (22343022034322).

The spelling of 20122011012220 in words is "twenty trillion, one hundred twenty-two billion, eleven million, twelve thousand, two hundred twenty".