1200020111022 has 32 divisors (see below), whose sum is σ = 2478989850624. Its totient is φ = 386864359200.

The previous prime is 1200020111021. The next prime is 1200020111027. The reversal of 1200020111022 is 2201110200021.

It is a junction number, because it is equal to n+sod(n) for n = 1200020110989 and 1200020111007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200020111021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1688538 + ... + 2291549.

It is an arithmetic number, because the mean of its divisors is an integer number (77468432832).

Almost surely, 2^{1200020111022} is an apocalyptic number.

1200020111022 is an abundant number, since it is smaller than the sum of its proper divisors (1278969739602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200020111022 is a wasteful number, since it uses less digits than its factorization.

1200020111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3981744.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1200020111022 its reverse (2201110200021), we get a palindrome (3401130311043).

The spelling of 1200020111022 in words is "one trillion, two hundred billion, twenty million, one hundred eleven thousand, twenty-two".