1211212103130 has 24 divisors (see below), whose sum is σ = 3149151468372. Its totient is φ = 322989894144.

The previous prime is 1211212103119. The next prime is 1211212103149. The reversal of 1211212103130 is 313012121121.

1211212103130 is a `hidden beast` number, since 1 + 21 + 121 + 210 + 313 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1060761984489 + 150450118641 = 1029933^2 + 387879^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6728956039 + ... + 6728956218.

Almost surely, 2^{1211212103130} is an apocalyptic number.

1211212103130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211212103130 is an abundant number, since it is smaller than the sum of its proper divisors (1937939365242).

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

1211212103130 is a wasteful number, since it uses less digits than its factorization.

1211212103130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13457912270 (or 13457912267 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1211212103130 its reverse (313012121121), we get a palindrome (1524224224251).

The spelling of 1211212103130 in words is "one trillion, two hundred eleven billion, two hundred twelve million, one hundred three thousand, one hundred thirty".