12011012011220 has 24 divisors (see below), whose sum is σ = 25271353018464. Its totient is φ = 4795218557856.

The previous prime is 12011012011199. The next prime is 12011012011231. The reversal of 12011012011220 is 2211021011021.

It is a super-2 number, since 2×12011012011220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12011012011195 and 12011012011204.

It is a congruent number.

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, 574129694 + ... + 574150613.

It is an arithmetic number, because the mean of its divisors is an integer number (1052973042436).

Almost surely, 2^{12011012011220} is an apocalyptic number.

12011012011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011012011220 is an abundant number, since it is smaller than the sum of its proper divisors (13260341007244).

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

12011012011220 is a wasteful number, since it uses less digits than its factorization.

12011012011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148280839 (or 1148280837 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12011012011220 its reverse (2211021011021), we get a palindrome (14222033022241).

The spelling of 12011012011220 in words is "twelve trillion, eleven billion, twelve million, eleven thousand, two hundred twenty".