1211200021022 has 8 divisors (see below), whose sum is σ = 1816876997496. Its totient is φ = 605574355192.

The previous prime is 1211200021019. The next prime is 1211200021033. The reversal of 1211200021022 is 2201200021121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1211200020988 and 1211200021006.

It is a congruent number.

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, 12768593 + ... + 12863100.

It is an arithmetic number, because the mean of its divisors is an integer number (227109624687).

Almost surely, 2^{1211200021022} is an apocalyptic number.

1211200021022 is a deficient number, since it is larger than the sum of its proper divisors (605676976474).

1211200021022 is a wasteful number, since it uses less digits than its factorization.

1211200021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25655322.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1211200021022 its reverse (2201200021121), we get a palindrome (3412400042143).

Subtracting 1211200021022 from its reverse (2201200021121), we obtain a palindrome (990000000099).

The spelling of 1211200021022 in words is "one trillion, two hundred eleven billion, two hundred million, twenty-one thousand, twenty-two".