1200011122220 has 24 divisors (see below), whose sum is σ = 2520046973808. Its totient is φ = 479999950400.

The previous prime is 1200011122213. The next prime is 1200011122249. The reversal of 1200011122220 is 222211100021.

It is a super-4 number, since 4×1200011122220⁴ (a number of 49 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200011122195 and 1200011122204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2653235 + ... + 3072405.

It is an arithmetic number, because the mean of its divisors is an integer number (105001957242).

Almost surely, 2^{1200011122220} is an apocalyptic number.

1200011122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200011122220 is an abundant number, since it is smaller than the sum of its proper divisors (1320035851588).

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

1200011122220 is a wasteful number, since it uses less digits than its factorization.

1200011122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562321 (or 562319 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200011122220 its reverse (222211100021), we get a palindrome (1422222222241).

It can be divided in two parts, 1200011 and 122220, that added together give a palindrome (1322231).

The spelling of 1200011122220 in words is "one trillion, two hundred billion, eleven million, one hundred twenty-two thousand, two hundred twenty".