1201122010020 has 24 divisors (see below), whose sum is σ = 3363141628224. Its totient is φ = 320299202656.

The previous prime is 1201122010013. The next prime is 1201122010027. The reversal of 1201122010020 is 200102211021.

It is an interprime number because it is at equal distance from previous prime (1201122010013) and next prime (1201122010027).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1201122009978 and 1201122010005.

It is not an unprimeable number, because it can be changed into a prime (1201122010027) 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, 10009350024 + ... + 10009350143.

It is an arithmetic number, because the mean of its divisors is an integer number (140130901176).

Almost surely, 2^{1201122010020} is an apocalyptic number.

1201122010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201122010020 is an abundant number, since it is smaller than the sum of its proper divisors (2162019618204).

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

1201122010020 is a wasteful number, since it uses less digits than its factorization.

1201122010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20018700179 (or 20018700177 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1201122010020 its reverse (200102211021), we get a palindrome (1401224221041).

The spelling of 1201122010020 in words is "one trillion, two hundred one billion, one hundred twenty-two million, ten thousand, twenty".