2101212121012 has 24 divisors (see below), whose sum is σ = 3678676968960. Its totient is φ = 1050161666400.

The previous prime is 2101212120977. The next prime is 2101212121033.

2101212121012 is nontrivially palindromic in base 10.

2101212121012 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between even and odd.

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, 161538213 + ... + 161551219.

It is an arithmetic number, because the mean of its divisors is an integer number (153278207040).

Almost surely, 2^{2101212121012} is an apocalyptic number.

It is an amenable number.

2101212121012 is a deficient number, since it is larger than the sum of its proper divisors (1577464847948).

2101212121012 is a wasteful number, since it uses less digits than its factorization.

2101212121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26991 (or 26989 counting only the distinct ones).

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

The spelling of 2101212121012 in words is "two trillion, one hundred one billion, two hundred twelve million, one hundred twenty-one thousand, twelve".