1212102225450 has 72 divisors (see below), whose sum is σ = 3273564692736. Its totient is φ = 321534948000.

The previous prime is 1212102225409. The next prime is 1212102225463. The reversal of 1212102225450 is 545222012121.

1212102225450 is a `hidden beast` number, since 1 + 2 + 12 + 102 + 2 + 2 + 545 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6965256 + ... + 7137155.

It is an arithmetic number, because the mean of its divisors is an integer number (45466176288).

Almost surely, 2^{1212102225450} is an apocalyptic number.

1212102225450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212102225450 is an abundant number, since it is smaller than the sum of its proper divisors (2061462467286).

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

1212102225450 is a wasteful number, since it uses less digits than its factorization.

1212102225450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14102620 (or 14102612 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 1212102225450 its reverse (545222012121), we get a palindrome (1757324237571).

The spelling of 1212102225450 in words is "one trillion, two hundred twelve billion, one hundred two million, two hundred twenty-five thousand, four hundred fifty".