1201221111022 has 12 divisors (see below), whose sum is σ = 1901656136736. Its totient is φ = 568999473300.

The previous prime is 1201221111011. The next prime is 1201221111043. The reversal of 1201221111022 is 2201111221021.

It is a junction number, because it is equal to n+sod(n) for n = 1201221110987 and 1201221111005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 831869854 + ... + 831871297.

It is an arithmetic number, because the mean of its divisors is an integer number (158471344728).

Almost surely, 2^{1201221111022} is an apocalyptic number.

1201221111022 is a deficient number, since it is larger than the sum of its proper divisors (700435025714).

1201221111022 is a wasteful number, since it uses less digits than its factorization.

1201221111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663741191 (or 1663741172 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1201221111022 its reverse (2201111221021), we get a palindrome (3402332332043).

The spelling of 1201221111022 in words is "one trillion, two hundred one billion, two hundred twenty-one million, one hundred eleven thousand, twenty-two".