2101430221545 has 32 divisors (see below), whose sum is σ = 3379609474560. Its totient is φ = 1114989935360.

The previous prime is 2101430221537. The next prime is 2101430221549. The reversal of 2101430221545 is 5451220341012.

It is not a de Polignac number, because 2101430221545 - 2³ = 2101430221537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101430221549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75601600 + ... + 75629390.

It is an arithmetic number, because the mean of its divisors is an integer number (105612796080).

Almost surely, 2^{2101430221545} is an apocalyptic number.

It is an amenable number.

2101430221545 is a deficient number, since it is larger than the sum of its proper divisors (1278179253015).

2101430221545 is a wasteful number, since it uses less digits than its factorization.

2101430221545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53585.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 2101430221545 its reverse (5451220341012), we get a palindrome (7552650562557).

The spelling of 2101430221545 in words is "two trillion, one hundred one billion, four hundred thirty million, two hundred twenty-one thousand, five hundred forty-five".