1201112222020 has 24 divisors (see below), whose sum is σ = 2522365335000. Its totient is φ = 480439237632.

The previous prime is 1201112221961. The next prime is 1201112222021. The reversal of 1201112222020 is 202222111021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 496754944 + 1200615467076 = 22288^2 + 1095726^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1201112221985 and 1201112222003.

It is not an unprimeable number, because it can be changed into a prime (1201112222021) 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, 1673206 + ... + 2280754.

It is an arithmetic number, because the mean of its divisors is an integer number (105098555625).

Almost surely, 2^{1201112222020} is an apocalyptic number.

1201112222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201112222020 is an abundant number, since it is smaller than the sum of its proper divisors (1321253112980).

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

1201112222020 is a wasteful number, since it uses less digits than its factorization.

1201112222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706407 (or 706405 counting only the distinct ones).

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

Adding to 1201112222020 its reverse (202222111021), we get a palindrome (1403334333041).

The spelling of 1201112222020 in words is "one trillion, two hundred one billion, one hundred twelve million, two hundred twenty-two thousand, twenty".