21013222101222 has 32 divisors (see below), whose sum is σ = 45260105556960. Its totient is φ = 6465484235520.

The previous prime is 21013222101217. The next prime is 21013222101329. The reversal of 21013222101222 is 22210122231012.

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, 1631322 + ... + 6684882.

It is an arithmetic number, because the mean of its divisors is an integer number (1414378298655).

Almost surely, 2^{21013222101222} is an apocalyptic number.

21013222101222 is an abundant number, since it is smaller than the sum of its proper divisors (24246883455738).

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

21013222101222 is a wasteful number, since it uses less digits than its factorization.

21013222101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106888.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21013222101222 its reverse (22210122231012), we get a palindrome (43223344332234).

The spelling of 21013222101222 in words is "twenty-one trillion, thirteen billion, two hundred twenty-two million, one hundred one thousand, two hundred twenty-two".