102021011830 has 32 divisors (see below), whose sum is σ = 194459766336. Its totient is φ = 38404015104.

The previous prime is 102021011809. The next prime is 102021011831. The reversal of 102021011830 is 38110120201.

It is a junction number, because it is equal to n+sod(n) for n = 102021011798 and 102021011807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021011831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2079847 + ... + 2128333.

It is an arithmetic number, because the mean of its divisors is an integer number (6076867698).

Almost surely, 2^102021011830 is an apocalyptic number.

102021011830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102021011830 is a deficient number, since it is larger than the sum of its proper divisors (92438754506).

102021011830 is a wasteful number, since it uses less digits than its factorization.

102021011830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60888.

The product of its (nonzero) digits is 96, while the sum is 19.

The spelling of 102021011830 in words is "one hundred two billion, twenty-one million, eleven thousand, eight hundred thirty".