2130021100042 has 16 divisors (see below), whose sum is σ = 3690517842432. Its totient is φ = 911238973120.

The previous prime is 2130021100019. The next prime is 2130021100049. The reversal of 2130021100042 is 2400011200312.

It is a junction number, because it is equal to n+sod(n) for n = 2130021099989 and 2130021100025.

It is not an unprimeable number, because it can be changed into a prime (2130021100049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2847621418 + ... + 2847622165.

It is an arithmetic number, because the mean of its divisors is an integer number (230657365152).

Almost surely, 2^{2130021100042} is an apocalyptic number.

2130021100042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2130021100042 is a deficient number, since it is larger than the sum of its proper divisors (1560496742390).

2130021100042 is a wasteful number, since it uses less digits than its factorization.

2130021100042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5695243613.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2130021100042 its reverse (2400011200312), we get a palindrome (4530032300354).

The spelling of 2130021100042 in words is "two trillion, one hundred thirty billion, twenty-one million, one hundred thousand, forty-two".