2100121220012 has 24 divisors (see below), whose sum is σ = 3730474955760. Its totient is φ = 1034274669120.

The previous prime is 2100121219997. The next prime is 2100121220033. The reversal of 2100121220012 is 2100221210012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2046314 + ... + 2896142.

It is an arithmetic number, because the mean of its divisors is an integer number (155436456490).

Almost surely, 2^{2100121220012} is an apocalyptic number.

It is an amenable number.

2100121220012 is a deficient number, since it is larger than the sum of its proper divisors (1630353735748).

2100121220012 is a wasteful number, since it uses less digits than its factorization.

2100121220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859121 (or 859119 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2100121220012 its reverse (2100221210012), we get a palindrome (4200342430024).

The spelling of 2100121220012 in words is "two trillion, one hundred billion, one hundred twenty-one million, two hundred twenty thousand, twelve".