22021220011222 has 32 divisors (see below), whose sum is σ = 36356603558400. Its totient is φ = 9957089913408.

The previous prime is 22021220011181. The next prime is 22021220011243. The reversal of 22021220011222 is 22211002212022.

It is a super-4 number, since 4×22021220011222⁴ (a number of 54 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 22021220011222.

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, 25442847 + ... + 26294122.

It is an arithmetic number, because the mean of its divisors is an integer number (1136143861200).

Almost surely, 2^{22021220011222} is an apocalyptic number.

22021220011222 is a deficient number, since it is larger than the sum of its proper divisors (14335383547178).

22021220011222 is a wasteful number, since it uses less digits than its factorization.

22021220011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51737500.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22021220011222 its reverse (22211002212022), we get a palindrome (44232222223244).

The spelling of 22021220011222 in words is "twenty-two trillion, twenty-one billion, two hundred twenty million, eleven thousand, two hundred twenty-two".