2211212122120 has 16 divisors (see below), whose sum is σ = 4975227274860. Its totient is φ = 884484848832.

The previous prime is 2211212122103. The next prime is 2211212122129. The reversal of 2211212122120 is 212212121122.

It can be written as a sum of positive squares in 2 ways, for example, as 2077766570916 + 133445551204 = 1441446^2 + 365302^2 .

It is not an unprimeable number, because it can be changed into a prime (2211212122129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27640151487 + ... + 27640151566.

Almost surely, 2^{2211212122120} is an apocalyptic number.

2211212122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211212122120 is an abundant number, since it is smaller than the sum of its proper divisors (2764015152740).

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

2211212122120 is a wasteful number, since it uses less digits than its factorization.

2211212122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55280303064 (or 55280303060 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2211212122120 its reverse (212212121122), we get a palindrome (2423424243242).

It can be divided in two parts, 2211212 and 122120, that added together give a palindrome (2333332).

The spelling of 2211212122120 in words is "two trillion, two hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, one hundred twenty".