10212001121220 has 24 divisors (see below), whose sum is σ = 28593603139584. Its totient is φ = 2723200298976.

The previous prime is 10212001121207. The next prime is 10212001121233. The reversal of 10212001121220 is 2212110021201.

It is an interprime number because it is at equal distance from previous prime (10212001121207) and next prime (10212001121233).

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 10212001121220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85100009284 + ... + 85100009403.

It is an arithmetic number, because the mean of its divisors is an integer number (1191400130816).

Almost surely, 2^{10212001121220} is an apocalyptic number.

10212001121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212001121220 is an abundant number, since it is smaller than the sum of its proper divisors (18381602018364).

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

10212001121220 is a wasteful number, since it uses less digits than its factorization.

10212001121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170200018699 (or 170200018697 counting only the distinct ones).

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

Adding to 10212001121220 its reverse (2212110021201), we get a palindrome (12424111142421).

The spelling of 10212001121220 in words is "ten trillion, two hundred twelve billion, one million, one hundred twenty-one thousand, two hundred twenty".