1212001210100 has 36 divisors (see below), whose sum is σ = 2669297008224. Its totient is φ = 477564653280.

The previous prime is 1212001210067. The next prime is 1212001210103. The reversal of 1212001210100 is 10121002121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212001210103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90441152 + ... + 90454551.

Almost surely, 2^{1212001210100} is an apocalyptic number.

1212001210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212001210100 is an abundant number, since it is smaller than the sum of its proper divisors (1457295798124).

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

1212001210100 is a wasteful number, since it uses less digits than its factorization.

1212001210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180895784 (or 180895777 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1212001210100 its reverse (10121002121), we get a palindrome (1222122212221).

The spelling of 1212001210100 in words is "one trillion, two hundred twelve billion, one million, two hundred ten thousand, one hundred".