2101111001212 has 12 divisors (see below), whose sum is σ = 3739265341560. Its totient is φ = 1032749475056.

The previous prime is 2101111001201. The next prime is 2101111001219. The reversal of 2101111001212 is 2121001111012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2101111001192 and 2101111001201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101111001219) 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 3 ways as a sum of consecutive naturals, for example, 4451506123 + ... + 4451506594.

It is an arithmetic number, because the mean of its divisors is an integer number (311605445130).

Almost surely, 2^{2101111001212} is an apocalyptic number.

It is an amenable number.

2101111001212 is a deficient number, since it is larger than the sum of its proper divisors (1638154340348).

2101111001212 is a wasteful number, since it uses less digits than its factorization.

2101111001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8903012780 (or 8903012778 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2101111001212 its reverse (2121001111012), we get a palindrome (4222112112224).

The spelling of 2101111001212 in words is "two trillion, one hundred one billion, one hundred eleven million, one thousand, two hundred twelve".