21130212133122 has 16 divisors (see below), whose sum is σ = 42513480700992. Its totient is φ = 7001227971920.

The previous prime is 21130212133049. The next prime is 21130212133127. The reversal of 21130212133122 is 22133121203112.

It is a junction number, because it is equal to n+sod(n) for n = 21130212133092 and 21130212133101.

It is not an unprimeable number, because it can be changed into a prime (21130212133127) 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, 10544017029 + ... + 10544019032.

It is an arithmetic number, because the mean of its divisors is an integer number (2657092543812).

Almost surely, 2^{21130212133122} is an apocalyptic number.

21130212133122 is an abundant number, since it is smaller than the sum of its proper divisors (21383268567870).

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

21130212133122 is a wasteful number, since it uses less digits than its factorization.

21130212133122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21088036233.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21130212133122 its reverse (22133121203112), we get a palindrome (43263333336234).

The spelling of 21130212133122 in words is "twenty-one trillion, one hundred thirty billion, two hundred twelve million, one hundred thirty-three thousand, one hundred twenty-two".