2101121021104 has 20 divisors (see below), whose sum is σ = 4652482261264. Its totient is φ = 900480437568.

The previous prime is 2101121021101. The next prime is 2101121021137. The reversal of 2101121021104 is 4011201211012.

It is a super-2 number, since 2×2101121021104² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (2101121021101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9380004447 + ... + 9380004670.

Almost surely, 2^{2101121021104} is an apocalyptic number.

It is an amenable number.

2101121021104 is an abundant number, since it is smaller than the sum of its proper divisors (2551361240160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101121021104 is a wasteful number, since it uses less digits than its factorization.

2101121021104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18760009132 (or 18760009126 counting only the distinct ones).

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

Adding to 2101121021104 its reverse (4011201211012), we get a palindrome (6112322232116).

The spelling of 2101121021104 in words is "two trillion, one hundred one billion, one hundred twenty-one million, twenty-one thousand, one hundred four".