1201100022120 has 256 divisors, whose sum is σ = 3756657139200. Its totient is φ = 306932613120.

The previous prime is 1201100022113. The next prime is 1201100022137. The reversal of 1201100022120 is 212200011021.

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 = 1201100022096 and 1201100022105.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 595487352 + ... + 595489368.

It is an arithmetic number, because the mean of its divisors is an integer number (14674441950).

Almost surely, 2^{1201100022120} is an apocalyptic number.

1201100022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201100022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1878328569600).

1201100022120 is an abundant number, since it is smaller than the sum of its proper divisors (2555557117080).

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

1201100022120 is a wasteful number, since it uses less digits than its factorization.

1201100022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028 (or 4024 counting only the distinct ones).

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

Adding to 1201100022120 its reverse (212200011021), we get a palindrome (1413300033141).

The spelling of 1201100022120 in words is "one trillion, two hundred one billion, one hundred million, twenty-two thousand, one hundred twenty".