21411142122 has 16 divisors (see below), whose sum is σ = 43425415872. Its totient is φ = 7036525440.

The previous prime is 21411142043. The next prime is 21411142127. The reversal of 21411142122 is 22124111412.

It is not an unprimeable number, because it can be changed into a prime (21411142127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25130023 + ... + 25130874.

It is an arithmetic number, because the mean of its divisors is an integer number (2714088492).

Almost surely, 2^21411142122 is an apocalyptic number.

21411142122 is an abundant number, since it is smaller than the sum of its proper divisors (22014273750).

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

21411142122 is a wasteful number, since it uses less digits than its factorization.

21411142122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50260973.

The product of its digits is 256, while the sum is 21.

Adding to 21411142122 its reverse (22124111412), we get a palindrome (43535253534).

The spelling of 21411142122 in words is "twenty-one billion, four hundred eleven million, one hundred forty-two thousand, one hundred twenty-two".