21142120310 has 8 divisors (see below), whose sum is σ = 38055816576. Its totient is φ = 8456848120.

The previous prime is 21142120243. The next prime is 21142120313. The reversal of 21142120310 is 1302124112.

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

It is a super-2 number, since 2×21142120310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142120313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057106006 + ... + 1057106025.

It is an arithmetic number, because the mean of its divisors is an integer number (4756977072).

Almost surely, 2^21142120310 is an apocalyptic number.

21142120310 is a deficient number, since it is larger than the sum of its proper divisors (16913696266).

21142120310 is a wasteful number, since it uses less digits than its factorization.

21142120310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114212038.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21142120310 its reverse (1302124112), we get a palindrome (22444244422).

The spelling of 21142120310 in words is "twenty-one billion, one hundred forty-two million, one hundred twenty thousand, three hundred ten".