1212202130100 has 72 divisors (see below), whose sum is σ = 3777097521120. Its totient is φ = 298388215680.

The previous prime is 1212202130093. The next prime is 1212202130107. The reversal of 1212202130100 is 10312022121.

It is an interprime number because it is at equal distance from previous prime (1212202130093) and next prime (1212202130107).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1212202130100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212202130107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155406630 + ... + 155414429.

Almost surely, 2^{1212202130100} is an apocalyptic number.

1212202130100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212202130100 is an abundant number, since it is smaller than the sum of its proper divisors (2564895391020).

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

1212202130100 is a wasteful number, since it uses less digits than its factorization.

1212202130100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310821089 (or 310821082 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1212202130100 its reverse (10312022121), we get a palindrome (1222514152221).

The spelling of 1212202130100 in words is "one trillion, two hundred twelve billion, two hundred two million, one hundred thirty thousand, one hundred".