11211235222120 has 64 divisors (see below), whose sum is σ = 25990006194000. Its totient is φ = 4350444054528.

The previous prime is 11211235222081. The next prime is 11211235222123. The reversal of 11211235222120 is 2122253211211.

It can be written as a sum of positive squares in 8 ways, for example, as 7230946877764 + 3980288344356 = 2689042^2 + 1995066^2 .

It is not an unprimeable number, because it can be changed into a prime (11211235222123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29520975 + ... + 29898334.

Almost surely, 2^{11211235222120} is an apocalyptic number.

11211235222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211235222120 is an abundant number, since it is smaller than the sum of its proper divisors (14778770971880).

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

11211235222120 is a wasteful number, since it uses less digits than its factorization.

11211235222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59419462 (or 59419458 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 11211235222120 its reverse (2122253211211), we get a palindrome (13333488433331).

The spelling of 11211235222120 in words is "eleven trillion, two hundred eleven billion, two hundred thirty-five million, two hundred twenty-two thousand, one hundred twenty".