1200221020012 has 24 divisors (see below), whose sum is σ = 2404490036256. Its totient is φ = 513513009408.

The previous prime is 1200221020003. The next prime is 1200221020013. The reversal of 1200221020012 is 2100201220021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200221019974 and 1200221020001.

It is not an unprimeable number, because it can be changed into a prime (1200221020013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36125923 + ... + 36159130.

It is an arithmetic number, because the mean of its divisors is an integer number (100187084844).

Almost surely, 2^{1200221020012} is an apocalyptic number.

It is an amenable number.

1200221020012 is an abundant number, since it is smaller than the sum of its proper divisors (1204269016244).

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

1200221020012 is a wasteful number, since it uses less digits than its factorization.

1200221020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72285657 (or 72285655 counting only the distinct ones).

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

Adding to 1200221020012 its reverse (2100201220021), we get a palindrome (3300422240033).

The spelling of 1200221020012 in words is "one trillion, two hundred billion, two hundred twenty-one million, twenty thousand, twelve".