21240122104212 has 48 divisors (see below), whose sum is σ = 54073016256000. Its totient is φ = 6435537435360.

The previous prime is 21240122104127. The next prime is 21240122104231.

21240122104212 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21240122104212² (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 15 ways as a sum of consecutive naturals, for example, 9801712 + ... + 11770887.

It is an arithmetic number, because the mean of its divisors is an integer number (1126521172000).

Almost surely, 2^{21240122104212} is an apocalyptic number.

21240122104212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21240122104212 is an abundant number, since it is smaller than the sum of its proper divisors (32832894151788).

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

21240122104212 is a wasteful number, since it uses less digits than its factorization.

21240122104212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21580076 (or 21580074 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

It can be divided in two parts, 2124012 and 2104212, that added together give a palindrome (4228224).

The spelling of 21240122104212 in words is "twenty-one trillion, two hundred forty billion, one hundred twenty-two million, one hundred four thousand, two hundred twelve".