2102145520001 has 4 divisors (see below), whose sum is σ = 2102201479104. Its totient is φ = 2102089560900.

The previous prime is 2102145519973. The next prime is 2102145520019. The reversal of 2102145520001 is 1000255412012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102145520001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102145510001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27923165 + ... + 27998346.

It is an arithmetic number, because the mean of its divisors is an integer number (525550369776).

Almost surely, 2^{2102145520001} is an apocalyptic number.

It is an amenable number.

2102145520001 is a deficient number, since it is larger than the sum of its proper divisors (55959103).

2102145520001 is an equidigital number, since it uses as much as digits as its factorization.

2102145520001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55959102.

The product of its (nonzero) digits is 800, while the sum is 23.

The spelling of 2102145520001 in words is "two trillion, one hundred two billion, one hundred forty-five million, five hundred twenty thousand, one".