1010021021220 has 96 divisors (see below), whose sum is σ = 2857148477568. Its totient is φ = 266582679552.

The previous prime is 1010021021203. The next prime is 1010021021257. The reversal of 1010021021220 is 221201200101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1010021021196 and 1010021021205.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2059887 + ... + 2502633.

It is an arithmetic number, because the mean of its divisors is an integer number (29761963308).

Almost surely, 2^{1010021021220} is an apocalyptic number.

1010021021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010021021220 is an abundant number, since it is smaller than the sum of its proper divisors (1847127456348).

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

1010021021220 is a wasteful number, since it uses less digits than its factorization.

1010021021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443149 (or 443147 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1010021021220 its reverse (221201200101), we get a palindrome (1231222221321).

The spelling of 1010021021220 in words is "one trillion, ten billion, twenty-one million, twenty-one thousand, two hundred twenty".