22021610001212 has 6 divisors (see below), whose sum is σ = 38537817502128. Its totient is φ = 11010805000604.

The previous prime is 22021610001169. The next prime is 22021610001329. The reversal of 22021610001212 is 21210001612022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752701250148 + ... + 2752701250155.

It is an arithmetic number, because the mean of its divisors is an integer number (6422969583688).

Almost surely, 2^{22021610001212} is an apocalyptic number.

It is an amenable number.

22021610001212 is a deficient number, since it is larger than the sum of its proper divisors (16516207500916).

22021610001212 is a wasteful number, since it uses less digits than its factorization.

22021610001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505402500307 (or 5505402500305 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 22021610001212 its reverse (21210001612022), we get a palindrome (43231611613234).

The spelling of 22021610001212 in words is "twenty-two trillion, twenty-one billion, six hundred ten million, one thousand, two hundred twelve".