21101130121222 has 4 divisors (see below), whose sum is σ = 31651695181836. Its totient is φ = 10550565060610.

The previous prime is 21101130121213. The next prime is 21101130121229. The reversal of 21101130121222 is 22212103110112.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21101130121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101130121229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5275282530304 + ... + 5275282530307.

It is an arithmetic number, because the mean of its divisors is an integer number (7912923795459).

Almost surely, 2^{21101130121222} is an apocalyptic number.

21101130121222 is a deficient number, since it is larger than the sum of its proper divisors (10550565060614).

21101130121222 is a wasteful number, since it uses less digits than its factorization.

21101130121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10550565060613.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21101130121222 its reverse (22212103110112), we get a palindrome (43313233231334).

The spelling of 21101130121222 in words is "twenty-one trillion, one hundred one billion, one hundred thirty million, one hundred twenty-one thousand, two hundred twenty-two".