2101122121012 has 24 divisors (see below), whose sum is σ = 3746540915712. Its totient is φ = 1030683981600.

The previous prime is 2101122121003. The next prime is 2101122121037. The reversal of 2101122121012 is 2101212211012.

It is a congruent number.

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, 3855337 + ... + 4366447.

It is an arithmetic number, because the mean of its divisors is an integer number (156105871488).

Almost surely, 2^{2101122121012} is an apocalyptic number.

It is an amenable number.

2101122121012 is a deficient number, since it is larger than the sum of its proper divisors (1645418794700).

2101122121012 is a wasteful number, since it uses less digits than its factorization.

2101122121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530559 (or 530557 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2101122121012 its reverse (2101212211012), we get a palindrome (4202334332024).

The spelling of 2101122121012 in words is "two trillion, one hundred one billion, one hundred twenty-two million, one hundred twenty-one thousand, twelve".