2101005421055 has 48 divisors (see below), whose sum is σ = 2727159252480. Its totient is φ = 1550869305216.

The previous prime is 2101005421049. The next prime is 2101005421057. The reversal of 2101005421055 is 5501245001012.

It is not a de Polignac number, because 2101005421055 - 2⁸ = 2101005420799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101005421057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112470206 + ... + 112488884.

It is an arithmetic number, because the mean of its divisors is an integer number (56815817760).

Almost surely, 2^{2101005421055} is an apocalyptic number.

2101005421055 is a deficient number, since it is larger than the sum of its proper divisors (626153831425).

2101005421055 is a wasteful number, since it uses less digits than its factorization.

2101005421055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19928 (or 19899 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 2101005421055 in words is "two trillion, one hundred one billion, five million, four hundred twenty-one thousand, fifty-five".