1201200021022 has 16 divisors (see below), whose sum is σ = 2008198178640. Its totient is φ = 535519513728.

The previous prime is 1201200020959. The next prime is 1201200021023. The reversal of 1201200021022 is 2201200021021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1201200020993 and 1201200021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201200021023) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 929720733 + ... + 929722024.

It is an arithmetic number, because the mean of its divisors is an integer number (125512386165).

Almost surely, 2^{1201200021022} is an apocalyptic number.

1201200021022 is a deficient number, since it is larger than the sum of its proper divisors (806998157618).

1201200021022 is a wasteful number, since it uses less digits than its factorization.

1201200021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859442795.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1201200021022 its reverse (2201200021021), we get a palindrome (3402400042043).

Subtracting 1201200021022 from its reverse (2201200021021), we obtain a palindrome (999999999999).

The spelling of 1201200021022 in words is "one trillion, two hundred one billion, two hundred million, twenty-one thousand, twenty-two".