1201001221212 has 48 divisors (see below), whose sum is σ = 3018144273312. Its totient is φ = 369508988160.

The previous prime is 1201001221163. The next prime is 1201001221247. The reversal of 1201001221212 is 2121221001021.

It is a junction number, because it is equal to n+sod(n) for n = 1201001221191 and 1201001221200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1666762 + ... + 2275982.

It is an arithmetic number, because the mean of its divisors is an integer number (62878005694).

Almost surely, 2^{1201001221212} is an apocalyptic number.

1201001221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201001221212 is an abundant number, since it is smaller than the sum of its proper divisors (1817143052100).

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

1201001221212 is a wasteful number, since it uses less digits than its factorization.

1201001221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621878 (or 621876 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1201001221212 its reverse (2121221001021), we get a palindrome (3322222222233).

The spelling of 1201001221212 in words is "one trillion, two hundred one billion, one million, two hundred twenty-one thousand, two hundred twelve".