21020023310134 has 8 divisors (see below), whose sum is σ = 31530161861928. Its totient is φ = 10509969356160.

The previous prime is 21020023310053. The next prime is 21020023310179. The reversal of 21020023310134 is 43101332002012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×21020023310134³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20524587 + ... + 21524374.

It is an arithmetic number, because the mean of its divisors is an integer number (3941270232741).

Almost surely, 2^{21020023310134} is an apocalyptic number.

21020023310134 is a deficient number, since it is larger than the sum of its proper divisors (10510138551794).

21020023310134 is a wasteful number, since it uses less digits than its factorization.

21020023310134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42298910.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21020023310134 its reverse (43101332002012), we get a palindrome (64121355312146).

The spelling of 21020023310134 in words is "twenty-one trillion, twenty billion, twenty-three million, three hundred ten thousand, one hundred thirty-four".