1012020010221 has 32 divisors (see below), whose sum is σ = 1505551546368. Its totient is φ = 599416019840.

The previous prime is 1012020010219. The next prime is 1012020010289. The reversal of 1012020010221 is 1220100202101.

It is not a de Polignac number, because 1012020010221 - 2¹ = 1012020010219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012020010197 and 1012020010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012020010021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 581665 + ... + 1537001.

It is an arithmetic number, because the mean of its divisors is an integer number (47048485824).

Almost surely, 2^{1012020010221} is an apocalyptic number.

1012020010221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012020010221 is a deficient number, since it is larger than the sum of its proper divisors (493531536147).

1012020010221 is a wasteful number, since it uses less digits than its factorization.

1012020010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956081.

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

Adding to 1012020010221 its reverse (1220100202101), we get a palindrome (2232120212322).

The spelling of 1012020010221 in words is "one trillion, twelve billion, twenty million, ten thousand, two hundred twenty-one".