1212551510130 has 64 divisors (see below), whose sum is σ = 3273390144000. Its totient is φ = 323347063536.

The previous prime is 1212551510117. The next prime is 1212551510141. The reversal of 1212551510130 is 310151552121.

It is a happy number.

1212551510130 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 5 + 515 + 10 + 130 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1212551510094 and 1212551510103.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27699930 + ... + 27743669.

It is an arithmetic number, because the mean of its divisors is an integer number (51146721000).

Almost surely, 2^{1212551510130} is an apocalyptic number.

1212551510130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212551510130 is an abundant number, since it is smaller than the sum of its proper divisors (2060838633870).

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

1212551510130 is an frugal number, since it uses more digits than its factorization.

1212551510130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55443627 (or 55443609 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

The spelling of 1212551510130 in words is "one trillion, two hundred twelve billion, five hundred fifty-one million, five hundred ten thousand, one hundred thirty".