22001212202122 has 8 divisors (see below), whose sum is σ = 34943101732836. Its totient is φ = 10353511624512.

The previous prime is 22001212202093. The next prime is 22001212202191. The reversal of 22001212202122 is 22120221210022.

It can be written as a sum of positive squares in 2 ways, for example, as 17917704850761 + 4083507351361 = 4232931^2 + 2020769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22001212202122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323547238233 + ... + 323547238300.

Almost surely, 2^{22001212202122} is an apocalyptic number.

22001212202122 is a deficient number, since it is larger than the sum of its proper divisors (12941889530714).

22001212202122 is a wasteful number, since it uses less digits than its factorization.

22001212202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647094476552.

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

Adding to 22001212202122 its reverse (22120221210022), we get a palindrome (44121433412144).

The spelling of 22001212202122 in words is "twenty-two trillion, one billion, two hundred twelve million, two hundred two thousand, one hundred twenty-two".