1211212011102 has 32 divisors (see below), whose sum is σ = 2424175737984. Its totient is φ = 403445484000.

The previous prime is 1211212011071. The next prime is 1211212011161. The reversal of 1211212011102 is 2011102121121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 71151352 + ... + 71168372.

It is an arithmetic number, because the mean of its divisors is an integer number (75755491812).

Almost surely, 2^{1211212011102} is an apocalyptic number.

1211212011102 is an abundant number, since it is smaller than the sum of its proper divisors (1212963726882).

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

1211212011102 is a wasteful number, since it uses less digits than its factorization.

1211212011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24904.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1211212011102 its reverse (2011102121121), we get a palindrome (3222314132223).

It can be divided in two parts, 121121 and 2011102, that multiplied together give a palindrome (243586685342).

The spelling of 1211212011102 in words is "one trillion, two hundred eleven billion, two hundred twelve million, eleven thousand, one hundred two".