1020010221021 has 8 divisors (see below), whose sum is σ = 1483651230624. Its totient is φ = 618188012720.

The previous prime is 1020010220953. The next prime is 1020010221067. The reversal of 1020010221021 is 1201220100201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020010221021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020010220988 and 1020010221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020010221091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15454700286 + ... + 15454700351.

It is an arithmetic number, because the mean of its divisors is an integer number (185456403828).

Almost surely, 2^{1020010221021} is an apocalyptic number.

1020010221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1020010221021 is a deficient number, since it is larger than the sum of its proper divisors (463641009603).

1020010221021 is a wasteful number, since it uses less digits than its factorization.

1020010221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30909400651.

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

Adding to 1020010221021 its reverse (1201220100201), we get a palindrome (2221230321222).

The spelling of 1020010221021 in words is "one trillion, twenty billion, ten million, two hundred twenty-one thousand, twenty-one".