1212000010220 has 24 divisors (see below), whose sum is σ = 2599353215424. Its totient is φ = 474485110016.

The previous prime is 1212000010187. The next prime is 1212000010279. The reversal of 1212000010220 is 220100002121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644679917 + ... + 644681796.

It is an arithmetic number, because the mean of its divisors is an integer number (108306383976).

Almost surely, 2^{1212000010220} is an apocalyptic number.

1212000010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212000010220 is an abundant number, since it is smaller than the sum of its proper divisors (1387353205204).

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

1212000010220 is a wasteful number, since it uses less digits than its factorization.

1212000010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289361769 (or 1289361767 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1212000010220 its reverse (220100002121), we get a palindrome (1432100012341).

The spelling of 1212000010220 in words is "one trillion, two hundred twelve billion, ten thousand, two hundred twenty".