201122122122220 has 24 divisors (see below), whose sum is σ = 454845414646224. Its totient is φ = 74260475860416.

The previous prime is 201122122122191. The next prime is 201122122122227. The reversal of 201122122122220 is 22221221221102.

It is a junction number, because it is equal to n+sod(n) for n = 201122122122191 and 201122122122200.

It is not an unprimeable number, because it can be changed into a prime (201122122122227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386773311514 + ... + 386773312033.

It is an arithmetic number, because the mean of its divisors is an integer number (18951892276926).

Almost surely, 2^{201122122122220} is an apocalyptic number.

201122122122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201122122122220 is an abundant number, since it is smaller than the sum of its proper divisors (253723292524004).

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

201122122122220 is a wasteful number, since it uses less digits than its factorization.

201122122122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773546623569 (or 773546623567 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 201122122122220 its reverse (22221221221102), we get a palindrome (223343343343322).

The spelling of 201122122122220 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty".