1010000121220 has 48 divisors (see below), whose sum is σ = 2167809896448. Its totient is φ = 395173537920.

The previous prime is 1010000121217. The next prime is 1010000121271. The reversal of 1010000121220 is 221210000101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1010000121197 and 1010000121206.

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 15 ways as a sum of consecutive naturals, for example, 2619927 + ... + 2980606.

It is an arithmetic number, because the mean of its divisors is an integer number (45162706176).

Almost surely, 2^{1010000121220} is an apocalyptic number.

1010000121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010000121220 is an abundant number, since it is smaller than the sum of its proper divisors (1157809775228).

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

1010000121220 is a wasteful number, since it uses less digits than its factorization.

1010000121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600740 (or 5600738 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1010000121220 its reverse (221210000101), we get a palindrome (1231210121321).

The spelling of 1010000121220 in words is "one trillion, ten billion, one hundred twenty-one thousand, two hundred twenty".