1201001312220 has 48 divisors (see below), whose sum is σ = 3539793344640. Its totient is φ = 303410857536.

The previous prime is 1201001312213. The next prime is 1201001312233. The reversal of 1201001312220 is 222131001021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1201001312220.

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, 526753822 + ... + 526756101.

It is an arithmetic number, because the mean of its divisors is an integer number (73745694680).

Almost surely, 2^{1201001312220} is an apocalyptic number.

1201001312220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201001312220 is an abundant number, since it is smaller than the sum of its proper divisors (2338792032420).

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

1201001312220 is a wasteful number, since it uses less digits than its factorization.

1201001312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053509954 (or 1053509952 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1201001312220 its reverse (222131001021), we get a palindrome (1423132313241).

The spelling of 1201001312220 in words is "one trillion, two hundred one billion, one million, three hundred twelve thousand, two hundred twenty".