1200120021022 has 16 divisors (see below), whose sum is σ = 1944408119472. Its totient is φ = 552257919360.

The previous prime is 1200120020987. The next prime is 1200120021031. The reversal of 1200120021022 is 2201200210021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1200120020993 and 1200120021011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68475604 + ... + 68493127.

It is an arithmetic number, because the mean of its divisors is an integer number (121525507467).

Almost surely, 2^{1200120021022} is an apocalyptic number.

1200120021022 is a deficient number, since it is larger than the sum of its proper divisors (744288098450).

1200120021022 is a wasteful number, since it uses less digits than its factorization.

1200120021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136969083.

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

Adding to 1200120021022 its reverse (2201200210021), we get a palindrome (3401320231043).

The spelling of 1200120021022 in words is "one trillion, two hundred billion, one hundred twenty million, twenty-one thousand, twenty-two".