21010223024142 has 16 divisors (see below), whose sum is σ = 45840486598272. Its totient is φ = 6366734249720.

The previous prime is 21010223024111. The next prime is 21010223024173. The reversal of 21010223024142 is 24142032201012.

It is an interprime number because it is at equal distance from previous prime (21010223024111) and next prime (21010223024173).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159168356178 + ... + 159168356309.

It is an arithmetic number, because the mean of its divisors is an integer number (2865030412392).

Almost surely, 2^{21010223024142} is an apocalyptic number.

21010223024142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21010223024142 is an abundant number, since it is smaller than the sum of its proper divisors (24830263574130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010223024142 is a wasteful number, since it uses less digits than its factorization.

21010223024142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318336712503.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21010223024142 its reverse (24142032201012), we get a palindrome (45152255225154).

The spelling of 21010223024142 in words is "twenty-one trillion, ten billion, two hundred twenty-three million, twenty-four thousand, one hundred forty-two".