10021201101021 has 64 divisors (see below), whose sum is σ = 15137195811840. Its totient is φ = 5844614231040.

The previous prime is 10021201101013. The next prime is 10021201101083. The reversal of 10021201101021 is 12010110212001.

It is not a de Polignac number, because 10021201101021 - 2³ = 10021201101013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10021201100988 and 10021201101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021201101221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45604005 + ... + 45823221.

It is an arithmetic number, because the mean of its divisors is an integer number (236518684560).

Almost surely, 2^{10021201101021} is an apocalyptic number.

10021201101021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10021201101021 is a deficient number, since it is larger than the sum of its proper divisors (5115994710819).

10021201101021 is a wasteful number, since it uses less digits than its factorization.

10021201101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219786.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10021201101021 its reverse (12010110212001), we get a palindrome (22031311313022).

The spelling of 10021201101021 in words is "ten trillion, twenty-one billion, two hundred one million, one hundred one thousand, twenty-one".