12021276136 has 32 divisors (see below), whose sum is σ = 23961146400. Its totient is φ = 5637902400.

The previous prime is 12021276121. The next prime is 12021276173. The reversal of 12021276136 is 63167212021.

It is a super-2 number, since 2×12021276136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12021276098 and 12021276107.

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, 376170 + ... + 406873.

It is an arithmetic number, because the mean of its divisors is an integer number (748785825).

Almost surely, 2^12021276136 is an apocalyptic number.

It is an amenable number.

12021276136 is a deficient number, since it is larger than the sum of its proper divisors (11939870264).

12021276136 is a wasteful number, since it uses less digits than its factorization.

12021276136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783169 (or 783165 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 12021276136 its reverse (63167212021), we get a palindrome (75188488157).

The spelling of 12021276136 in words is "twelve billion, twenty-one million, two hundred seventy-six thousand, one hundred thirty-six".