21142243403110 has 16 divisors (see below), whose sum is σ = 38056844616336. Its totient is φ = 8456718141088.

The previous prime is 21142243403069. The next prime is 21142243403123. The reversal of 21142243403110 is 1130434224112.

It is a happy number.

It is a super-2 number, since 2×21142243403110² (a number of 27 digits) contains 22 as substring.

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, 21906532 + ... + 22851271.

It is an arithmetic number, because the mean of its divisors is an integer number (2378552788521).

Almost surely, 2^{21142243403110} is an apocalyptic number.

21142243403110 is a deficient number, since it is larger than the sum of its proper divisors (16914601213226).

21142243403110 is a wasteful number, since it uses less digits than its factorization.

21142243403110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44805047.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21142243403110 its reverse (1130434224112), we get a palindrome (22272677627222).

The spelling of 21142243403110 in words is "twenty-one trillion, one hundred forty-two billion, two hundred forty-three million, four hundred three thousand, one hundred ten".