22021020223312 has 60 divisors (see below), whose sum is σ = 46903209078880. Its totient is φ = 10008237602880.

The previous prime is 22021020223229. The next prime is 22021020223313. The reversal of 22021020223312 is 21332202012022.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021020223313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14044603 + ... + 15533605.

Almost surely, 2^{22021020223312} is an apocalyptic number.

22021020223312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22021020223312 is an abundant number, since it is smaller than the sum of its proper divisors (24882188855568).

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

22021020223312 is a wasteful number, since it uses less digits than its factorization.

22021020223312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496672 (or 1496655 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 22021020223312 its reverse (21332202012022), we get a palindrome (43353222235334).

The spelling of 22021020223312 in words is "twenty-two trillion, twenty-one billion, twenty million, two hundred twenty-three thousand, three hundred twelve".