22201222021012 has 6 divisors (see below), whose sum is σ = 38852138536778. Its totient is φ = 11100611010504.

The previous prime is 22201222021007. The next prime is 22201222021039. The reversal of 22201222021012 is 21012022210222.

It can be written as a sum of positive squares in only one way, i.e., 21112150281616 + 1089071739396 = 4594796^2 + 1043586^2 .

It is a super-3 number, since 3×22201222021012³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775152752623 + ... + 2775152752630.

Almost surely, 2^{22201222021012} is an apocalyptic number.

It is an amenable number.

22201222021012 is a deficient number, since it is larger than the sum of its proper divisors (16650916515766).

22201222021012 is a wasteful number, since it uses less digits than its factorization.

22201222021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5550305505257 (or 5550305505255 counting only the distinct ones).

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

Adding to 22201222021012 its reverse (21012022210222), we get a palindrome (43213244231234).

The spelling of 22201222021012 in words is "twenty-two trillion, two hundred one billion, two hundred twenty-two million, twenty-one thousand, twelve".