1212001300220 has 48 divisors (see below), whose sum is σ = 2552130050400. Its totient is φ = 483482388480.

The previous prime is 1212001300217. The next prime is 1212001300277. The reversal of 1212001300220 is 220031002121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1212001300195 and 1212001300204.

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, 14580536 + ... + 14663424.

It is an arithmetic number, because the mean of its divisors is an integer number (53169376050).

Almost surely, 2^{1212001300220} is an apocalyptic number.

1212001300220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212001300220 is an abundant number, since it is smaller than the sum of its proper divisors (1340128750180).

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

1212001300220 is a wasteful number, since it uses less digits than its factorization.

1212001300220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84878 (or 84876 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1212001300220 its reverse (220031002121), we get a palindrome (1432032302341).

The spelling of 1212001300220 in words is "one trillion, two hundred twelve billion, one million, three hundred thousand, two hundred twenty".