2101212122012 has 6 divisors (see below), whose sum is σ = 3677121213528. Its totient is φ = 1050606061004.

The previous prime is 2101212121991. The next prime is 2101212122029. The reversal of 2101212122012 is 2102212121012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262651515248 + ... + 262651515255.

It is an arithmetic number, because the mean of its divisors is an integer number (612853535588).

Almost surely, 2^{2101212122012} is an apocalyptic number.

It is an amenable number.

2101212122012 is a deficient number, since it is larger than the sum of its proper divisors (1575909091516).

2101212122012 is a wasteful number, since it uses less digits than its factorization.

2101212122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525303030507 (or 525303030505 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2101212122012 its reverse (2102212121012), we get a palindrome (4203424243024).

The spelling of 2101212122012 in words is "two trillion, one hundred one billion, two hundred twelve million, one hundred twenty-two thousand, twelve".