1212011100102 has 96 divisors (see below), whose sum is σ = 2693532989952. Its totient is φ = 363270600000.

The previous prime is 1212011100067. The next prime is 1212011100109. The reversal of 1212011100102 is 2010011102121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212011100109) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 77057763 + ... + 77073489.

It is an arithmetic number, because the mean of its divisors is an integer number (28057635312).

Almost surely, 2^{1212011100102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212011100102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1346766494976).

1212011100102 is an abundant number, since it is smaller than the sum of its proper divisors (1481521889850).

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

1212011100102 is a wasteful number, since it uses less digits than its factorization.

1212011100102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16906 (or 16895 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1212011100102 its reverse (2010011102121), we get a palindrome (3222022202223).

The spelling of 1212011100102 in words is "one trillion, two hundred twelve billion, eleven million, one hundred thousand, one hundred two".