21022222231042 has 48 divisors (see below), whose sum is σ = 32764076009280. Its totient is φ = 10109949456096.

The previous prime is 21022222230979. The next prime is 21022222231061. The reversal of 21022222231042 is 24013222222012.

It is a junction number, because it is equal to n+sod(n) for n = 21022222230998 and 21022222231016.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249015603 + ... + 249100009.

It is an arithmetic number, because the mean of its divisors is an integer number (682584916860).

Almost surely, 2^{21022222231042} is an apocalyptic number.

21022222231042 is a deficient number, since it is larger than the sum of its proper divisors (11741853778238).

21022222231042 is a wasteful number, since it uses less digits than its factorization.

21022222231042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84887 (or 84724 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21022222231042 its reverse (24013222222012), we get a palindrome (45035444453054).

The spelling of 21022222231042 in words is "twenty-one trillion, twenty-two billion, two hundred twenty-two million, two hundred thirty-one thousand, forty-two".