21142223410 has 64 divisors (see below), whose sum is σ = 47466445824. Its totient is φ = 6587006400.

The previous prime is 21142223309. The next prime is 21142223413. The reversal of 21142223410 is 1432224112.

It is a super-2 number, since 2×21142223410² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (21142223413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2560749 + ... + 2568991.

It is an arithmetic number, because the mean of its divisors is an integer number (741663216).

Almost surely, 2^21142223410 is an apocalyptic number.

21142223410 is an abundant number, since it is smaller than the sum of its proper divisors (26324222414).

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

21142223410 is a wasteful number, since it uses less digits than its factorization.

21142223410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11599.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21142223410 its reverse (1432224112), we get a palindrome (22574447522).

The spelling of 21142223410 in words is "twenty-one billion, one hundred forty-two million, two hundred twenty-three thousand, four hundred ten".