20020122201220 has 48 divisors (see below), whose sum is σ = 42848609707008. Its totient is φ = 7854550254720.

The previous prime is 20020122201203. The next prime is 20020122201239. The reversal of 20020122201220 is 2210222102002.

It is a junction number, because it is equal to n+sod(n) for n = 20020122201194 and 20020122201203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580237 + ... + 6354283.

It is an arithmetic number, because the mean of its divisors is an integer number (892679368896).

Almost surely, 2^{20020122201220} is an apocalyptic number.

20020122201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020122201220 is an abundant number, since it is smaller than the sum of its proper divisors (22828487505788).

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

20020122201220 is a wasteful number, since it uses less digits than its factorization.

20020122201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777380 (or 5777378 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20020122201220 its reverse (2210222102002), we get a palindrome (22230344303222).

The spelling of 20020122201220 in words is "twenty trillion, twenty billion, one hundred twenty-two million, two hundred one thousand, two hundred twenty".