21222211011060 has 48 divisors (see below), whose sum is σ = 59424098380416. Its totient is φ = 5659074598272.

The previous prime is 21222211011031. The next prime is 21222211011061. The reversal of 21222211011060 is 6011011222212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222211011061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3787392 + ... + 7535831.

It is an arithmetic number, because the mean of its divisors is an integer number (1238002049592).

Almost surely, 2^{21222211011060} is an apocalyptic number.

21222211011060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21222211011060 is an abundant number, since it is smaller than the sum of its proper divisors (38201887369356).

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

21222211011060 is a wasteful number, since it uses less digits than its factorization.

21222211011060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11354472 (or 11354470 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 21222211011060 its reverse (6011011222212), we get a palindrome (27233222233272).

The spelling of 21222211011060 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred eleven million, eleven thousand, sixty".