12213603515240 has 32 divisors (see below), whose sum is σ = 27483081743880. Its totient is φ = 4885001613312.

The previous prime is 12213603515227. The next prime is 12213603515249. The reversal of 12213603515240 is 4251530631221.

It can be written as a sum of positive squares in 4 ways, for example, as 9277665197476 + 2935938317764 = 3045926^2 + 1713458^2 .

It is a super-2 number, since 2×12213603515240² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12213603515240.

It is not an unprimeable number, because it can be changed into a prime (12213603515249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13293449 + ... + 14182488.

Almost surely, 2^{12213603515240} is an apocalyptic number.

12213603515240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213603515240 is an abundant number, since it is smaller than the sum of its proper divisors (15269478228640).

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

12213603515240 is a wasteful number, since it uses less digits than its factorization.

12213603515240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27487061 (or 27487057 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 12213603515240 in words is "twelve trillion, two hundred thirteen billion, six hundred three million, five hundred fifteen thousand, two hundred forty".