2100121101982 has 16 divisors (see below), whose sum is σ = 3396858267600. Its totient is φ = 970530932160.

The previous prime is 2100121101917. The next prime is 2100121101997. The reversal of 2100121101982 is 2891011210012.

It is a self number, because there is not a number n which added to its sum of digits gives 2100121101982.

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, 673978257 + ... + 673981372.

It is an arithmetic number, because the mean of its divisors is an integer number (212303641725).

Almost surely, 2^{2100121101982} is an apocalyptic number.

2100121101982 is a deficient number, since it is larger than the sum of its proper divisors (1296737165618).

2100121101982 is a wasteful number, since it uses less digits than its factorization.

2100121101982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347959691.

The product of its (nonzero) digits is 576, while the sum is 28.

Adding to 2100121101982 its reverse (2891011210012), we get a palindrome (4991132311994).

The spelling of 2100121101982 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred one thousand, nine hundred eighty-two".