1200021022012 has 12 divisors (see below), whose sum is σ = 2191342736016. Its totient is φ = 573923097440.

The previous prime is 1200021022009. The next prime is 1200021022051. The reversal of 1200021022012 is 2102201200021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200021021983 and 1200021022001.

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, 6521853289 + ... + 6521853472.

It is an arithmetic number, because the mean of its divisors is an integer number (182611894668).

Almost surely, 2^{1200021022012} is an apocalyptic number.

It is an amenable number.

1200021022012 is a deficient number, since it is larger than the sum of its proper divisors (991321714004).

1200021022012 is a wasteful number, since it uses less digits than its factorization.

1200021022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13043706788 (or 13043706786 counting only the distinct ones).

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

Adding to 1200021022012 its reverse (2102201200021), we get a palindrome (3302222222033).

The spelling of 1200021022012 in words is "one trillion, two hundred billion, twenty-one million, twenty-two thousand, twelve".